Race Database

Floripa International Marathon showcases Florianópolis on a fast coastal road course, with island views, bridge approaches, and a large Brazilian field.

Hokkaido Marathon is Japan's major summer city marathon, carrying a large Sapporo field past central landmarks and long exposed roads in August heat.

Nine net-downhill miles on hard-packed gravel rail-trail make Iron Horse one of Washington's fastest off-road halves, run point to point near North Bend.

Mexico City Marathon brings 30,000 runners from UNAM to the Zocalo on an AIMS and WA-certified 42.195K route at altitude with label-race scale.

Asunción's international marathon uses two city loops along the capital's riverside and urban avenues, backed by Paraguay Marathon Club support.

Millennium Meadows Marathon uses repeated meadow and paved-trail loops in Grand Rapids, combining compact support with Boston qualifying status.

NMDC Hyderabad Marathon crosses the city's lakeside roads, flyovers, and western tech corridor on a demanding point-to-point course with an early start.

Appletree Marathon explores Vancouver's waterfront, Fort Vancouver, and nearby neighborhoods on a certified course designed for steady late-summer pacing.

The Self-Transcendence 3100 Mile Race circles one Queens block for up to 52 days, turning daily mileage, recovery, heat, and repetition into the test.

TCS Sydney Marathon is the newest World Marathon Major, with harbour views, bridge running, and a point-to-point course that is scenic but not flat.

Two Hollows Monster Marathon repeats two steep Kennedy State Forest loops near Virgil, amassing about 4,400 feet of relentless Finger Lakes climbing.

Six days on a certified asphalt loop reward steady pacing, sleep strategy, and crew discipline in one of Europe's established multiday races.

SwissPeaks 170 sends runners across roughly 168 kilometres of steep Valais mountain terrain, linking Oberwald with the shores of Lake Geneva.

Fränkischer Backyard Ultra repeats a hilly forest loop every hour until one runner remains, blending precise pacing, quick resets, and open-ended racing.

Sohra's point-to-point half marathon pairs steep Meghalaya roads and waterfall-country scenery with a demanding wet-season test for runners.

Abebe Bikila Day International Peace Marathon follows the flat C&O Canal Towpath near Washington, offering a small-field BQ late in the qualification window.

A long-running Alpena charity race, this point-to-point half follows the flat crushed limestone North Eastern State Trail to a finish in northern Michigan.

Bull of the Woods sends trail marathoners over Kachina Peak at 12,481 feet and Fraser Peak at 12,168 feet across the Taos Ski Valley trail system.

Dingle Marathon follows the Wild Atlantic coast around the peninsula, pairing Slea Head and Blasket Island views with hills, wind, and quiet roads.

Fehmarn Marathon offers a small Baltic island road race through open fields and coastal villages, where flat terrain leaves runners exposed to wind.

Sold as One Hill of a Race, this Wisconsin half rolls past Big Green Lake and through the Conference Center grounds on a route that never lets you settle.

Helsingborg Half Marathon blends city streets, forest paths and seaside views on a 21.1-kilometre course hosting Sweden's 2026 half championship.

Helsingborg Marathon ranges from the waterfront into parks and neighborhoods, pairing Öresund views with rolling city terrain and a central finish.

Jump Off Joe Marathon follows mountainous gravel roads through shrub-steppe outside Kennewick, offering a low-key Washington full with big views.

Jungfrau Marathon climbs from Interlaken to Kleine Scheidegg beneath the Eiger, Mönch, and Jungfrau, trading road speed for a sustained Alpine ascent.

Mostly singletrack at Camp Manatoc in the Cuyahoga Valley, on Boy Scout camp trails that open to runners only for this Ohio trail race weekend.

Marathon du Médoc turns a full-distance race through Pauillac vineyards and châteaux into a costumed celebration with wine, food, and rolling roads.

Marquette Marathon runs point to point across Michigan's Upper Peninsula, pairing a quick certified route with a downtown finish near Lake Superior.

Crushed limestone paths through Danada Forest Preserve give DuPage County runners a flat half marathon on trails instead of open suburban roads.

Two laps around Prairie Queen Lake from a minor league ballpark, with close to 1,900 feet of rolling gain and a 5:30 limit that leaves little slack.

Patagonian International Marathon crosses remote mixed-surface roads near Torres del Paine, pairing mountain views with steep grades and fierce wind.

A rugged 21K through Torres del Paine pairs gravel and paved roads with mountain views, strong winds, steep climbs and a dramatic Patagonian finish.

Petra Desert Marathon begins among the ancient city's rock-cut monuments, then tackles steep desert roads and tracks beneath Jordan's late-summer sun.

Pocatello Marathon drops from Buckskin Saddle into the city, combining a fast point-to-point profile, high-desert scenery, and late rollers.

Warsaw Praski Night Half Marathon gives runners a 21.1-kilometre evening road race through the Polish capital with a late-summer festival atmosphere.

Bedford Running Festival Half Marathon pairs a Sunday 13.1-mile race with riverside scenery and a large post-race festival in Bedfordshire each year.

Caernarfon's half starts and finishes beside its medieval castle, mixing town roads with rolling sections and a long downhill return to the finish.

Diablo Trail Run Marathon tackles steep East Bay terrain near Mount Diablo, offering technical California climbing at the full distance without requiring a 50K.

Fränkische Schweiz-Marathon crosses Upper Franconia by road, linking villages, castles and limestone scenery in a distinctive Bavarian full.

Tropical scenery and honest climbing define this Poipu half, which passes the Tunnel of Trees before descending to an oceanfront island finish.

Maratón Medellín tours the Aburrá Valley through Colombia's second city, combining urban landmarks, altitude, warm conditions, and gradual elevation changes.

Medellín Half Marathon covers a certified 21.098-kilometre city route from Parques del Río, pairing a large field with an early tropical start.

Flat farm roads out of Robbinsville Community Park, with a hard 3 hour cutoff that makes this central New Jersey half a genuine pace commitment.

A low-key Northwoods marathon run out and back on the flat Bearskin State Trail, starting in downtown Minocqua and finishing on the lake trestle.

Nouméa's South Pacific marathon loops around the city's bays, combining waterfront roads, coconut shade, and a measured 276-meter climb in southern winter.

Run on Labor Day weekend since 2005, the Oak Tree Half Marathon rolls through Genesee Valley farmland and funds local land conservation with every entry.

Malaysia's long-running PJ Half starts before dawn in Petaling Jaya, combining a deep community field, humid conditions and a generous four-hour cutoff.

Punta del Este International Marathon brings a 42K road race to Uruguay's Atlantic resort, pairing a coastal city course with a long event history.

Sackets Harbor Marathon is a small Labor Day road race on Lake Ontario, offering a certified BQ course, quiet rural miles, and waterfront wind.

Surfers Point Marathon repeats a flat beachfront bike-path loop in Ventura, offering ocean views and a certified California Boston qualifier.

London’s community-focused half starts beside Tower Bridge, crosses four boroughs and finishes at the Cutty Sark in Greenwich on a mostly flat route.

Tupelo Marathon starts before dawn on rolling Mississippi roads, using an early clock and its offbeat skull theme to confront September heat.

Vedanta Zinc City Half Marathon brings a timed 21.097 km road race to Udaipur, with a growing event weekend and warm early-September conditions.

Vibha's Bay Area fundraiser runs a chip timed half with pacers for seven target times, drawing around 200 finishers alongside similar 10K and 5K fields.

Japan's northernmost full runs point to point from Cape Soya to Wakkanai Port, pairing coastal exposure with a generous 6.5-hour limit in northern Hokkaido.

Derry's historic Waterside Half starts and finishes in Ebrington Square, tracing riverside greenways, parks, and four bridges across the city.

Wizz Air Budapest Half Marathon pairs a large international field with a fast city route past Danube views and landmark architecture in early autumn.

New Haven Road Race Half Marathon starts from the New Haven Green on Labor Day, adding a distinct 13.1-mile option to a long-running city event.

Heart of America Marathon tests Labor Day runners in Missouri with Columbia's hills, heat, humidity, gravel and the storied climb of Easley Hill.

A flat Cherry Creek trail course and a holiday morning start make this Parker half a Colorado PR target, with 10K and 5K races on the same program.

A 100-kilometer route over Great Wall ruins, alpine grasslands, military tunnels, and old trade paths gives Zhangjiakou's DGW100 a rare historic profile.

Superior 100 Mile follows the rugged Superior Hiking Trail from Gooseberry State Park to Lutsen across northeast Minnesota's North Shore in September.

Ultra-Trail Harricana 125 follows a rugged linear route through Quebec's Charlevoix backcountry with about 4,635 metres of climbing in September.

Wasatch Front 100 crosses Utah's rugged range from Kaysville to Soldier Hollow, stacking about 24,000 feet of ascent into a strict 36-hour clock.

Wildstrubel 100 sends runners around a 113-kilometre Alpine loop from Crans-Montana, with 6,600 metres of climbing and a 30-hour limit overnight.

A Lions Club marathon on Elroy's converted rail trails during Apple Dumpling Days, with flat shaded miles and small-town Wisconsin festival energy.

A flat run along the Scarborough Marsh from an American Legion base, with a beer finish and charity fundraising built into southern Maine's fall calendar.

Nine of this Bar Harbor half marathon's miles run on Acadia carriage roads, a hilly gravel course put on by the MDI YMCA past granite bridges.

Beat the Blerch Half Marathon mixes playful race-day theming with a flat gravel out-and-back through mossy forest along the Snoqualmie Valley Trail.

Lancaster County farmland carries this rolling half, with aid stations in Amish one-room schoolhouses and a handcrafted horseshoe finisher medal.

Black Squirrel climbs 1,500 feet to Lory State Park's west ridge, then drops onto runnable singletrack with views over Horsetooth Reservoir.

Blackwater Canyon Half Marathon drops about 1,400 feet from Thomas to Parsons on a scenic point-to-point rail-trail route through West Virginia.

BurliMOT runs point to point from Burlington into downtown Minot on paved Souris Valley paths, giving North Dakota a cool-weather September half.

Cascade Express Marathon is a Washington downhill qualifier near North Bend, built for steady rail-trail pacing and cool mountain race starts.

Dirt, gravel, and pavement beside Lake Champlain, on an out and back that sends half marathoners through the Holmes Creek Covered Bridge twice.

Dirt Dash Marathon covers eight shaded trail loops on Johns Island, giving Lowcountry runners a well-supported full with a seven-hour time limit.

Oslo’s two-lap city marathon circles waterfront and central landmarks, with a sold-out field, shifting September weather, and repeated course exposure.

Named for marathon great Dick Beardsley, this Detroit Lakes half marathon has run for three decades on lake-country Minnesota roads in early fall.

Danville's courthouse square sends runners onto farm roads west of Indianapolis and hands finishers a fall festival, under a 3.5 hour course cutoff.

Geist Half Marathon rolls along Geist Reservoir in Fishers, a suburban Indianapolis race with waterfront bridges, tree-lined roads, and steady hills.

Germany's national 100K road championship uses a flat five-kilometer circuit in Berlin, pairing elite championship racing with an open 100K field.

A southwest Ohio trail 50K in its fourth decade, run as four loops of Germantown MetroPark through cedar forest, prairie, and Twin Creek hills.

Singletrack through the Mountain Bridge Wilderness gives this South Carolina trail half about 2,000 feet of climbing past Rainbow Falls at Jones Gap State Park.

Only 82 kilometers long but packed with 5,600 meters of gain, Kaçkar's high passes, river crossings, and remote village trails make this a severe 100K.

Lock 2 Lock Marathon traces the nearly flat C&O Canal Towpath from Williamsport, offering runners a certified Maryland BQ and 7.5-hour window.

Nearly 100 kilometers through Taiping rainforest, steep staircases, creek crossings, and rough forest track make MY100 a humid, technical 32-hour ultra.

Kilkenny's Medieval Marathon combines a compact historic-city start with long rural road miles and a memorable finish beside the River Nore.

Accra's flagship 21K loops through the capital from Black Star Square, combining a certified city course, large fields and a lively festival finish.

Mogollon Monster 100 covers 102.3 rugged miles along Arizona's Mogollon Rim, with about 15,900 feet of climbing and a 38-hour limit in September.

Wooded trails, Lake Michigan dunes, paved town miles, and 302 stairs give this Saugatuck half marathon a demanding multi-terrain race identity.

Run on an active Army post, this Fort Eustis half has been on the calendar since the early 1980s and uses base roads the public rarely gets to see.

Old Forge Marathon adds a certified full to an Adirondack endurance weekend, with a small-town race base and several days of outdoor events.

Pine Creek Challenge 100 Mile runs four passages through Pennsylvania's Pine Creek Gorge on a scenic, nontechnical and highly runnable rail-trail course.

REVEL Big Cottonwood Half Marathon drops out of the Wasatch canyons toward Salt Lake City, giving fast-course runners a scenic September target.

REVEL Big Cottonwood plunges from Guardsman Pass toward Salt Lake City, delivering canyon scenery, a steep net drop, altitude, and fast splits.

A Saturday 21K through Tallinn combines Baltic city streets, seaside stretches, and a Toompea finish with a practical three-hour cutoff for runners.

Prize money three deep and entry open into race week set this young Danville marathon apart, run as four laps of one downtown loop by the Dan River.

The single-stage Ultra X England covers 112 kilometers across Peak District ridges, moorland and limestone valleys, with more than 4,000 meters of climbing.

Wabash Trace Running Festival Marathon follows a fast Iowa rail trail from Shenandoah, carrying this established full into a broader event weekend.

The Youngstown Ultra Trail Classic has looped Mill Creek Park for about two decades, running a 50K on singletrack past gorges, lakes, and waterfalls.

The world’s largest half carries 63,000 runners from Newcastle over the Tyne Bridge to a loud, rolling South Shields finish beside the North Sea.

Boring Marathon turns its Oregon town name into a playful community race while giving serious runners a certified road course and Boston qualifying option.

Boston or Bust Marathon is a goal-paced Huntsville road race built around a late-season qualifying attempt, run on a looped course in early autumn heat.

Bozeman Half Marathon descends from the southern foothills toward a Main Street finish, framed by broad views across Montana's Gallatin Valley.

Chișinău Marathon runs four central-city laps from Great National Assembly Square, combining a certified 42.195K route with Moldova's largest running event.

The Elk River Braxton County Monster Marathon follows a quiet West Virginia rail trail, offering gentle grades, river scenery, and small-field support.

Erie Marathon is a flat Presque Isle qualifier known for even pacing, lakefront weather, and a focused September field chasing fast marathon times.

Georgina Marathon follows a flat lakeside Ontario course designed for fast times, giving autumn runners a certified route and explicit Boston qualifying focus.

Queen City Marathon explores Regina's Wascana Centre, downtown, and residential streets on a certified prairie course with strong community support.

Massachusetts North Shore half that starts at Manchester Essex High School and runs a certified route past the downtown and the Hamilton lakes.

Half-Boring turns Oregon's place name into a trail-side race identity, running out and back from Boring Station on the paved Springwater Trail.

Holland Haven Marathon gives Michigan runners a lakeshore September race from Grand Haven toward Holland, with point-to-point course appeal.

Crown Point's USATF-certified out-and-back half keeps entry cheap and logistics simple, with a fairgrounds base and quiet streets in northwest Indiana.

A mostly flat Douro-side loop gives Porto's large autumn half a fast profile, historic-city scenery, and a straightforward three-hour limit.

A flat Danube road course runs from Emmersdorf to Krems through Austria's Wachau Valley, giving marathoners a point-to-point route built for steady pacing.

Ladakh Marathon runs through Leh and the Indus Valley at roughly 3,500 meters, where stark Himalayan scenery and thin air outweigh conventional road pace.

Marathon de Rimouski pairs a flat St. Lawrence shoreline course with a polished Quebec race weekend and qualifying potential for Boston and New York.

Maraton İzmir follows broad waterfront roads beside the Gulf of İzmir, offering a largely flat urban course with long exposed pacing sections.

New Forest Marathon crosses quiet lanes and forest tracks near Brockenhurst, pairing heathland, woodland, wildlife, and rolling mixed terrain.

Flat roads at 5,000 feet carry this Albuquerque half across the Rio Grande and back through the North Valley during New Mexico's green chile season.

Sarajevo's city half starts at Marijin Dvor and uses a fast, flat, well-supported certified route with seven aid points and a three-hour course limit.

A tropical coastal half marathon in Krabi runs near Ao Nang and Nopparat Thara, blending sea views, humid conditions and a festival atmosphere.

The Mighty Mo runs a flat, certified course through Iowa, Nebraska, and South Dakota along the Missouri River, with indoor staging in Sioux City.

Skagit Flats Marathon crosses level Washington farmland before a track finish in Burlington, giving runners a proven Pacific Northwest BQ race.

Sundance-to-Spearfish Marathon drops across the Wyoming-South Dakota line on a small, capped point-to-point course certified for Boston qualifying.

Estonia's capital marathon runs a single road loop from Toompea through Tallinn, pairing a cool early-autumn start with a six-hour course limit.

Vilnius Marathon gives runners a Baltic capital-city race with an early-fall date, historic-center miles, and broad festival-distance appeal.

Vilnius's central-city half marathon passes historic streets and river corridors, offering a major Baltic race atmosphere and a three-hour time limit.

Flat, fast North Jersey half on car-free Saddle River County Park paths, organized by the Racefaster running store with an optional training program entry.

The Rut 50K climbs technical mountain terrain around Big Sky and Lone Peak, combining exposed scrambling, steep grades and a capped field each September.

Tor des Géants loops 330 kilometers around the Aosta Valley with 24,000 meters of climbing, no forced stages, mountain refuges, and a 150-hour limit.

Tunnel Light Marathon descends from the Snoqualmie Tunnel onto the Palouse to Cascades Trail, creating a fast September Boston qualifying course.

A charity half in Acadiana that treats 13.1 as the main event, starting at dawn from the Broussard Sports Complex with proceeds going to Love Acadiana.

Münster’s fast city marathon starts and finishes near Prinzipalmarkt, combining flat roads, neighborhood parties, and deep German club participation.

A net-downhill point-to-point on the D&L Trail, dropping 680 feet from Lehigh Gorge to Lehighton on a certified course built for qualifying times.

This fast point-to-point half follows the Danube through Wachau wine country from Spitz to Krems, pairing gentle terrain with village and vineyard views.

About as flat as 13.1 gets in central Pennsylvania: a City Island start, Susquehanna riverfront miles, and a field that regularly clears 450 runners.

Grindstone by UTMB 100M tackles 104 miles and nearly 21,000 feet of climbing through Virginia's technical Allegheny Mountains each September.

Julian Alps Trail Run 120K links Radovljica and Kranjska Gora over 124 kilometres, adding 5,893 metres of climbing and a 32-hour limit through Slovenia.

Atlantic Forest climbs, 4,850 meters of gain, and the historic Caminho do Ouro shape Paraty's 108K from the coast to Serra do Mar and its colonial center.

A self-navigated 100K challenge from Hathersage crosses 3,200 meters of Peak District climbing, with GPS tracking, staffed checkpoints and 24 hours.

Run Rabbit Run 100 combines a tough high-country loop around Steamboat Springs with separate Hare and Tortoise starts and a six-figure prize purse.

Dhaka's international half marathon brings runners to Hatirjheel for a certified 21.095K road race, early-evening start and energetic urban setting.

Vietnam's original 100-mile mountain race covers 161 km and 8,800 meters of gain between Sa Pa, high forest, grassland, and rice terraces in wet season.

Aviation history frames this Dayton half, linking Wright State and Wright-Patterson before a memorable finish at the iconic U.S. Air Force museum.

Air Force Marathon gives runners a large Dayton race weekend anchored at Wright-Patterson, with military atmosphere and Boston qualifier support.

Susquehanna River Half Marathon connects Havre de Grace and Perryville on a supported road course beside the river and upper Chesapeake Bay.

Austria Backyard Ultra Kirchdorf runs a flat 6.706-kilometer riverside yard every hour, keeping crews close while the last runner standing decides the end.

Shuttle-only start at 9,550 feet west of Buena Vista, then roughly 2,500 feet of descent on mostly dirt roads into the upper Arkansas River valley.

The Barkley Fall Classic condenses Frozen Head's steep, rough backcountry character into a one-day 50K with a large but selective field in eastern Tennessee.

Bismarck’s fall marathon pairs Missouri River scenery with a certified, mostly flat course, manageable logistics, and a strong regional race weekend.

Black Hills Veterans Marathon follows the Mickelson Trail from Rochford to historic Deadwood, pairing crushed-limestone running with a military mission.

Small-town Wyoming half starting and finishing at City Park in downtown Cody, run near 5,000 feet with September mountain air and a beer at the line.

A rolling loop past Circle Lake in rural Rice County, Minnesota, on mixed paved and gravel roads, with entry fees funding lake water quality projects.

Cytiva Top of Utah Marathon now uses a flat Logan city course, serving fast racing, open Cache Valley views, and the 2026 USATF Utah championship.

Devil After Dark starts near sunset in Lovell Canyon, replacing Las Vegas heat and neon with moonlit forest roads beneath the Spring Mountains.

Equinox Marathon gives runners a tough Fairbanks trail-and-road challenge, with autumn Alaska conditions and a course built around patient effort.

Upper Peninsula half on flat ground beside Little Bay de Noc, starting and finishing in Ludington Park with a September course built for even splits.

A long-running Swiss half marathon circles Greifensee from Uster on a mostly paved route, mixing lakeside scenery, modest hills and strong club competition.

Thimphu's high-altitude marathon pairs a pre-dawn Himalayan road challenge with a capital-city finish and a 42.195 km course built around endurance.

IMTUF 100 is a rugged mountain hundred around McCall, combining remote Idaho singletrack, sustained climbing and a deeply established ultra community.

A 24-hour road ultra on Verona's certified 1,525.48-meter circuit, where runners accumulate distance through a full day and night with steady pacing.

Mattoni Ústí nad Labem Half Marathon is a flat 21.097-kilometre city race with an unusual industrial passage and a 3,500-runner field in northern Czechia.

Mountain Lakes 100 circles remote Oregon lakes and Cascade forest on a mountain course known for runnable trail and sustained nighttime miles.

Muruvik repeats a flat 6.7 km path between Muruvik and Hommelvik, pairing record-friendly terrain with one of Norway's largest backyard fields.

A flat, USATF-certified point-to-point along Puget Sound, run twice in one September weekend from Lincoln Park to Alki with skyline and island views.

Pacific Northwest Marathon runs point to point from Coburg to Harrisburg on a flat, gradually descending Oregon course built for fast times.

A flat rails-to-trails 100K that starts and ends at the Eiffel Tower replica in Paris, Texas, with 50K, marathon, and evening races the same day.

A point to point trail ultra across North Carolina's Sauratown Mountains, with a 50 mile flagship from Pilot Mountain to Hanging Rock and a 50K option.

Priest Lake Marathon follows a predominantly smooth-dirt route from Hill's Resort, wrapping a destination Idaho full around forest and lakeside scenery.

Ruidoso Marathon carries its established mountain-race brand to a new Fort Stanton hub, preserving a high-country New Mexico road full in Lincoln County.

Bhutan's capital half marathon explores Thimphu's valleys, riversides and cultural landmarks at altitude, creating a distinctive Himalayan city race.

Voet van Afrika Marathon is a demanding Overberg point-to-point race, mixing rough mountain trail, farm roads, and a road finish in Bredasdorp.

A flat September half looping Alameda's island streets and shoreline from Alameda Point, with entry fees supporting the Alameda Education Foundation.

A Chesapeake charity half built from one neighborhood road loop and two circuits of Quiet Waters Park, run against a firm three-hour cutoff.

Back Your Badge Marathon follows a flat certified route past Plainfield public-safety facilities while directly supporting local first responders.

Baden Marathon links Karlsruhe and nearby communities on a flat-to-rolling road course known for dependable organization and strong local support.

Belfast City Half Marathon takes a large field from Ormeau Park across the capital on a supported 13.1-mile course with a three-hour limit each autumn.

Bellingham Bay Marathon gives runners a Pacific Northwest waterfront race with September timing, bay views, and regional race-weekend scale.

Lansing's long-running fall half marathon mixes downtown streets with the paved Lansing River Trail along the Grand River and the Red Cedar River.

Santa Fe International Half Marathon pairs a USATF-certified 13.1-mile road course with high-desert views and a finish near the city Railyard.

Fox Cities threads parks, waterfront paths, neighborhoods, and Wisconsin’s long Trestle Trail Bridge on a well-supported point-to-point course.

DC Half is a locally organized 13.1-mile race from West Potomac Park, giving runners a focused fall half in the nation's capital in September.

A women's half marathon on the roads of Belle Isle Park, with the Detroit skyline on one side of the island and the Windsor waterfront on the other.

Wisconsin's state half championship follows gently rolling country roads from UW-Whitewater before returning for a stadium finish on the field.

A flat, certified Hudson Valley half that crosses the Walkway Over the Hudson and uses rail trail miles for steady pacing and fast finishes.

A point-to-point downhill half through the Poudre River Canyon near Fort Collins, starting at the Mishawaka Amphitheatre and ending at a field party.

Fleet Feet Rochester Half Marathon blends Genesee River scenery, neighborhood support and purposeful elevation changes on a fall city route.

Fox Valley Marathon follows the Fox River through Chicago's western suburbs, offering a flat-to-rolling Boston qualifier with strong pacing support.

Garmin's Toledo marathon uses a mostly flat downtown course that crosses the Maumee River twice and runs through Glass City Metropark and the zoo.

Halfmarathon Altötting is a fast, sheltered Bavarian road race with 80% of the route in forest, five aid stations, pacers, and a three-hour limit.

Blacksburg's college-town half caps entry at 2,000 runners and mixes town roads with the paved Huckleberry Trail near the Virginia Tech campus.

National teams race 100 km on a compact road circuit in Ames, bringing the IAU world championship to Galicia and rewarding disciplined pacing.

Kassel Marathon tours the north Hessian city on varied urban roads, mixing parkland, neighborhoods, gradual grades, and a stadium finish in autumn.

Northern Maine countryside hosts a certified small-town marathon that heads straight down Route 2 toward Enfield on flat, quiet rural roads.

Buenos Aires Marathon gives South America a fast September 42K through Palermo, Recoleta, Puerto Madero, La Boca, and city-center streets in spring.

Maratón León sends a deep Mexican city field over a certified 42.195 km road course, with an early start that helps runners manage altitude and heat.

Montana Marathon descends point to point from the plains near Molt into downtown Billings, offering open-country scenery and a certified Boston qualifier.

Philadelphia Distance Run brings a historic, fast half marathon back to Center City with a Parkway start and Eakins Oval finish in September.

Pikes Peak is a mountain marathon in the literal sense, climbing from Manitou Springs to 14,115 feet before a technical, quad-heavy descent on Barr Trail.

Sioux Falls Marathon gives runners a certified South Dakota fall race with city paths, regional logistics, and Boston-qualifier racing value.

A demanding 100K through coastal Kyoto combines early-morning waves, sustained road climbing, exposed weather, and a firm fourteen-hour limit.

Heart Core Trail climbs through Heidelberg's wooded hills for 45 km, pairing roughly 2,019 metres of ascent with UTMB Index and iTRA relevance.

A flat, paved half marathon on Antwerp's Left Bank gives runners broad urban roads, a three-hour limit and a festival-style finish near the Scheldt.

Salem hosts a USATF-certified September half through Salem and Marblehead, starting and finishing at Salem Willows before Halloween crowds take over.

A one-off mass-participation world championship brings 35,000 runners to Copenhagen’s flat streets on the same stage as the elite field on race day.

Yonkers Marathon carries one of America's oldest marathon traditions through the Hudson Valley city, approaching a centennial running in Westchester County.

Bear 100 Mile runs point to point from Logan toward Bear Lake, with 22,816 feet of climbing, fall colors and a 36-hour mountain cutoff each autumn.

A runnable out-and-back through Karkloof forests and farmland gives South African 100-mile runners generous aid access and a firm 36-hour cutoff.

Nice Côte d'Azur by UTMB 100M drops from the Mercantour high country to the Mediterranean over 165 kilometres and 8,900 metres of gain over two days.

Tullner Lauftage's 48-hour race circles a lit asphalt loop beside the Aubad lake, rewarding steady pacing, crew routines, and overnight resilience.

Absa Marathon gives Lusaka a separate September 42.2 km city race, with a high-plateau start and a large field spanning four road-race distances.

Akron Half Marathon delivers a downtown Ohio tour with early climbing, a faster closing five miles and a major finish-line atmosphere each September.

Belleville Main Street Marathon combines a certified road course, lively neighborhood support, and a downtown finish just across the river from St. Louis.

An out-and-back half on the Betsie Valley Trail's flat crushed-stone rail bed, crossing Dair Creek and the Betsie River through northern Michigan forest.

West Georgia's sellout half marathon starts on Adamson Square, runs past Lake Carroll at sunrise, and rolls through the shaded Carrollton GreenBelt.

A Spokane-area club half that has run for nearly five decades, covering quiet back roads through Colbert and Green Bluff farm country in late September.

Rail trail half near Watkins Glen that shares its Saturday with an 18 miler, which makes it a common tune up inside a fall marathon training block.

Akron Marathon gives runners a late-September Ohio city race with neighborhood miles, relay energy, and a stadium-style downtown finish-line feel.

Fort4Fitness Half Marathon brings a large community field through Fort Wayne before a memorable ballpark finish inside downtown Parkview Field.

Galaxy Vladivostok Marathon crosses the Russian Far East city's landmark bridges on a demanding urban route with roughly 906 metres of climbing.

The Hamptons Marathon is a polished East End road race with quiet lanes, coastal-community scenery, and an autumn date built for fall goals.

A low-cost 24-hour classic circles Hinson Lake on a certified 1.5032-mile trail loop, with chip-timed laps, wooded shade, and a deep waitlist.

Jackson Hole Marathon gives runners a paved Wyoming destination course from Jackson toward Teton Village, with altitude, views, and late-season timing.

The Jamestown Rhode Races half loops nearly all of Conanicut Island, with Narragansett Bay views, a Pell Bridge backdrop, and a long climb near mile 9.

Lisboa Backyard Ultra turns Monsanto Forest Park into an hourly 6.706 km proving ground, combining city access with a wooded endurance setting.

A flat resort half marathon from Margaritaville Resort Orlando to the Promenade at Sunset Walk, with an early start and a 3:45 course time limit.

Mill Race Marathon gives Columbus, Indiana, a flat fall Boston qualifier with modern architecture, neighborhood miles, and a compact downtown finish.

Monument Marathon crosses Nebraska's Scotts Bluff country on a certified road course, delivering prairie, sandstone landmark views, and a small-field feel.

Holland's shoreline half links Lake Macatawa, Holland State Park, and Lakeshore Drive on a certified loop with a firm 16 minute per mile course cutoff.

Run Iron Mountain pairs a scenic Dickinson County half with a community-led race day that has raised nearly $200,000 for local charities since 2012.

A high country trail festival on Colorado's Rainbow Trail, with a 104 mile flagship plus 100K, 50 mile, and 50K races from a ranch base near Westcliffe.

Sky Island sends 50K runners onto mile-high trails in the Davis Mountains near Fort Davis, with about 3,900 feet of climbing and long desert views.

Spartathlon follows Pheidippides' route for 246 kilometers from Athens to Sparta, with 75 checkpoints and an unforgiving 36-hour overall limit.

Miss the split where the half peels off and this small Missouri marathon reroutes you onto the shorter course, the one sharp edge on a gentle city route.

Boise's largest community race sends half marathoners past the Capitol, the Old Idaho Penitentiary, and the Boise Depot before a finish in Ann Morrison Park.

The Lakes TrailFest closes Alaska's fall trail season with a 50K, 25K, 10K, and 5K on rolling wooded singletrack at Matanuska Lakes near Palmer.

A volunteer-run Stevens Point half along the Wisconsin River and city trails, where race proceeds fund land and water conservation in central Wisconsin.

La Crosse runs this half from Riverside Park over part of the Oktoberfest parade route, under a hard 2 hour 45 minute cutoff before the parade starts.

Zanesville built its half around the three way Y Bridge, looping historic neighborhoods on about 414 feet of total elevation change under a 3.5 hour limit.

Adirondack Marathon circles Schroon Lake on a small-field course with steep early climbs, long rollers, mountain views, and a beach finish in town.

Almaty Marathon is Central Asia's largest running event, pairing mountain views with long city climbs, steep descents, and a six-hour limit.

Gold Country trail half that measures nearer 13.6 miles than 13.1, climbs about 2,465 feet, and crosses No Hands Bridge on the Western States Trail.

The Australian 6 Day Ultra turns a short Thorndon Park loop into 144 hours of pacing, fueling, sleep management, and distance accumulation near Adelaide.

Baxters Loch Ness Marathon is a remote Highland point-to-point with dramatic loch scenery, coach-to-start logistics, and a lively Inverness finish.

Bengaluru Marathon is a major urban road race through India's technology capital, combining a large field, early start, and energetic city support.

Turn-heavy East Tennessee half through downtown Johnson City, Mountain Home and the ETSU campus, with a relay running the same certified route.

BMW Berlin Marathon is the fastest World Marathon Major, with a flat city course, deep international field, and one of the best PR chances in racing.

Entry sells out every year for this Colorado marathon, which runs county back roads above 5,300 feet and finishes on the pedestrian Pearl Street Mall.

Missouri's long-running City of Roses Half follows paved trail and neighborhood roads from Cape Girardeau, with relay teams and an early-start option.

Clarence DeMar Marathon follows a net-downhill route into Keene, blending New Hampshire lake and woodland roads with a historic Boston-qualifying race.

An island half marathon on car-light Büyükada combines coastal roads, wooded hills and Bosphorus views, offering a scenic escape from central Istanbul.

Farm to Farm's 50-mile loop race links Wolfe's Neck Center and conservation trails in Freeport, offering repeated aid access on mixed trail.

H.C. Andersen Half Marathon offers a traffic-free 21.097-kilometre tour of Odense, combining city streets and festival support in early autumn.

Odense’s H.C. Andersen Marathon uses a flat, traffic-free city course, with neighborhood support, reliable organization, and a deep Danish club field.

Hengshui Lake International Marathon is a flat Chinese road race around a lake-city landscape, where open roads and autumn weather favor rhythm.

Kuching Marathon starts before dawn for a tropical city tour, combining broad roads, riverfront sections, neighborhood support, heat, and humidity.

Rare traffic-restricted access to Lake Shore Drive defines this flat South Side half, with skyline views and a Jackson Park start and finish.

Moscow Marathon is Russia's largest road marathon, taking a deep field past central landmarks, river embankments, and the Luzhniki sports complex.

Omaha Marathon gives Nebraska runners a certified fall race with city-road miles, regional travel ease, and a useful late-September calendar slot.

A paved half along the Palisades ridge above the Hudson, with over 1,400 feet of climbing and shuttle access from Manhattan to the Fort Lee start.

Pattaya Marathon starts before dawn for a coastal city race, combining beach roads, urban turns, tropical humidity, and a large Thai field at sunrise.

Nottingham's flagship half leaves Victoria Embankment for city streets and Wollaton Park, returning beside the River Trent for a festival finish.

Luxembourg's historic Route du Vin half marathon runs beside the Moselle through vineyard country, combining a fast road course with borderland scenery.

A certified two-lap half marathon beside Lake Lugano, with Swiss championship depth, split start waves, and a compact city-center race setup.

Taiyuan Marathon carries a large field from Wuyi Square along broad city avenues and the Fen River, pairing a quick urban route with a six-hour limit.

Tbilisi Half Marathon runs two identical city-center loops from Republic Square, pairing international-standard measurement with a Georgian capital setting.

Quad Cities crosses four Mississippi River communities, three bridges, two states, and one island on a certified, mostly flat Midwest course.

Vermont 50 Ultra Run covers fifty miles of private trails, woods roads and steep Green Mountain terrain around Mount Ascutney each early autumn.

Warsaw Marathon is a historic Polish capital race with an uninterrupted lineage since 1979, a broad city course, and cool September conditions.

Rarámuri 100M sends runners 135 kilometres through Mexico's remote Copper Canyon, pairing 6,700 metres of climbing with a demanding 32-hour cutoff.

UTLMBY circles Monteux's Lac de Beaulieu on fast hourly 6.70 km yards, drawing a capped field and performances with global at-large relevance.

Amman’s marathon takes on the Jordanian capital’s rolling roads and long urban grades, with an early start and a community-focused race weekend.

A city half through central Amman, pairing traffic-free streets and a Roman Amphitheatre finish area with the capital's persistent rolling terrain.

Infinity Trail Île d'Aix sends hourly yards around a car-light Atlantic island, mixing coastal tracks, sand, roads, bridges, and historic walls.

Jeju100M covers 148 kilometers of volcanic mountain terrain, pairing a nighttime start and Mount Halla summit with 5,000 meters of gain and 37 hours.

Angeles Crest 100 is a Southern California mountain 100-miler through the San Gabriels, known for heat, altitude swings, and old-school endurance.

Arkansas Traveller 100 is a classic Ouachita endurance run over forest roads and trails, pairing a 100-mile course with a 30-hour limit in early October.

A women's half marathon in Green Bay each fall, with a two-person relay and 5K alongside and a field of about 1,500 finishing on the downtown CityDeck.

Brookings Marathon offers a flat, intimate Boston qualifier through South Dakota State, city parks, and residential streets with a 300-runner cap.

High-altitude racing from downtown Colorado Springs, with an out-and-back on the Greenway and Santa Fe trails at roughly 6,000 feet in early fall.

Cuyamaca 100K traverses oak woodland, pine forest, chaparral and desert-edge trail near San Diego, with a 19-hour limit and live pods each October.

Evansville Half Marathon tours downtown, historic Bosse Field, Garvin Park and the Pigeon Creek Greenway on a gently rolling 13.1-mile route.

Flagstaff Marathon explores ponderosa and aspen forest above 8,000 feet at Arizona Nordic Village, where altitude adds weight to every trail mile.

Fly to Pie Kingdom Marathon follows tough Vermont dirt roads from Coventry across the Northeast Kingdom, finishing at Parker Pie in West Glover.

A soggy October trail marathon through Girdwood's rain forest, linking Winner Creek, the Iditarod trails, and Alyeska singletrack south of Anchorage.

Four decades of South Shore racing move several hundred runners through downtown Bay Shore and the Brightwaters canals to a finish facing Fire Island.

Fully paved Shenandoah Valley half from Westover Park through city parks, golf course paths and neighborhoods, with a two-leg relay on the same route.

Hennepin Hundred 100 Mile follows Illinois' historic canal trail from Sterling toward Colona on a flat, fast and highly runnable point-to-point route.

Le Roy is where JELL-O was invented, and its October half runs quiet paved farm roads through Genesee County to a finish at the JELL-O Barn.

Leavenworth Marathon descends from Washington's Icicle Canyon toward a Bavarian-style town finish, mixing mountain scenery with a quick certified route.

This north suburban Chicago half runs through downtown Long Grove on a USATF-certified course and ends at an Oktoberfest party with beer and brats.

New Hampshire Marathon circles Newfound Lake on a hilly rural road course, pairing fall foliage, small-town support, and a demanding Boston qualifier.

A capped-field Colorado trail half at Canon City that crosses the Royal Gorge Bridge, the highest suspension bridge in the US, high above the Arkansas River.

Sleeping Bear Marathon runs through Michigan's lakeshore country on paved roads and trails, blending fall color, dunes, orchards, and a certified course.

St. George Marathon gives runners a fast Utah downhill course with desert scenery, lottery demand, and long-standing Boston qualifier appeal.

Tartu City Marathon gives runners a single-lap tour of Estonia's university city, linking old-town streets, riverbanks, bridges, and leafy parks.

A half marathon built by Black Atlanta runners, routing through East Point, Westview, Oakland City, and other historically Black neighborhoods each fall.

Towpath Marathon follows the Ohio & Erie Canal corridor on flat crushed-limestone trail, favoring steady pacing and reliably cool fall conditions.

Ultra Pirineu 100K loops through Cadí-Moixeró from Bagà, covering 100 kilometres with 6,600 metres of climbing and mostly trail terrain in the Pyrenees.

About 6,300 feet of climbing carries this Montana 50K to the summit of Big Mountain, with proceeds funding Whitefish Trail building and upkeep.

Great Scottish Run Half Marathon fills central Glasgow with a large field, urban landmarks and a fast closing stretch into Glasgow Green each autumn.

Manchester's huge closed-road half pairs a famously flat Old Trafford course with deep crowds, fast pacing groups, and major-event energy all day.

Québec City’s fall marathon rolls through historic streets and riverside districts, rewarding runners who prepare for turns, grades, and cool conditions.

A charity-focused Hoover half with a generous cutoff, a shared marathon start at the Hoover Met, and warm-weather pacing demands on rolling roads.

Cardiff Castle, Penarth and Cardiff Bay anchor a fast SuperHalfs course backed by one of Britain’s strongest half-marathon crowds and a large field.

Clarendon Marathon traces the historic Clarendon Way from Salisbury to Winchester, combining chalk paths, fields, and relentless off-road rollers.

Bend's point-to-point half gives away roughly 500 feet in its first half on the Cascade Lakes bike path, then flattens out along the Deschutes River Trail.

Cologne's fast city half starts across the Rhine in Deutz and finishes beside the cathedral, with a 20,000-runner field and a firm 2:45 cutoff.

Cologne Marathon gives runners a large German city race with Rhine-side energy, autumn crowds, and a festival feel around the full marathon.

Scheduled against Balloon Fiesta week, this flat Rio Grande valley half starts at Los Poblanos Fields with hot air balloons filling the sky overhead.

Greenbrier River Trail Marathon follows a flat rail-trail corridor from Marlinton, blending West Virginia river scenery with accessible unpaved terrain.

Shuttle buses from a high school lot feed this paved Little Beaver Creek Greenway half, a young eastern Ohio race run under a firm three hour cutoff.

Wineglass Marathon gives runners a fast point-to-point Finger Lakes course into Corning, with fall scenery and strong qualifier-season demand.

A history minded North Carolina half past Hillsborough's colonial era landmarks, finishing with a gravel lap of the 1949 Occoneechee Speedway track.

Isle of Wight Marathon is a historic, undulating road race through East Wight villages and countryside, with coastal air and a welcoming club-run field.

One of New Jersey's oldest distance races, run on a flat, USATF-certified two-loop course at Sandy Hook between the Atlantic Ocean and the bay.

The closing leg of a Central Valley half marathon series, run on Bakersfield's paved river trail from the infield of a 1940s minor league ballpark.

Kosice Peace Marathon gives runners one of Europe's historic city marathons, with a Slovak autumn course and deep race-weekend tradition for travelers.

Kuala Lumpur Standard Chartered Marathon starts before dawn at Dataran Merdeka, touring the Malaysian capital through heat, humidity, and rolling city roads.

Sri Lanka's long-running capital marathon delivers a tropical road challenge, an early start, and AIMS certification across the full 42.195-kilometer distance.

Maine Marathon gives runners a Portland fall race with coastal New England scenery, certified-course value, and manageable race-day logistics.

P’tit Train du Nord drops steadily along a Laurentian rail trail from Val-David to Saint-Jérôme, making it one of Canada’s fastest fall marathons.

Twin Cities Marathon sends runners from Minneapolis to Saint Paul on a polished fall point-to-point course with strong neighborhood support.

Milwaukee Lakefront Marathon crosses the Hoan Bridge on a certified city-and-lake course, with a major climb, open exposure, and downtown miles.

The Monza Half Marathon brings runners onto the famous Autodromo and surrounding park roads, blending motorsport history with a fast Lombardy race.

NipMuck Trail Marathon covers about 26.4 technical miles from Ashford, preserving a longstanding New England singletrack challenge with a relay option.

Long-running Jersey Shore half with a flat two-loop boardwalk and barrier island course in Seaside Park, capped at 600 entries and a three hour limit.

A metropark half on wide paved lake paths north of Detroit, run as two laps plus a short add-on and used by Michigan runners as a fall tune-up race.

Every mile of this Modesto half is dedicated to a fallen Stanislaus County officer, and sworn runners can take the same course on in full duty gear.

Portland Half Marathon offers a supported city race through Oregon's largest city with a downtown start, river views and fall timing each October.

Portland Marathon gives runners an Oregon city course with bridge and neighborhood miles, fall timing, and a large Pacific Northwest regional field.

A loop half through Poulsbo's Little Norway waterfront district on the Kitsap Peninsula, starting and finishing at Liberty Bay Waterfront Park in October.

Poznań Marathon gives runners a broad autumn tour of one of Poland's major cities, combining central landmarks, residential districts, and strong local support.

A high-altitude city marathon from central Querétaro, combining broad avenues and rolling urban roads with a six-hour course limit for runners.

Rock 'n' Roll San Jose Half Marathon is a flat downtown race built around live music, generous pacing support and Speed City tradition in early October.

Reno's only point-to-point half runs from the Swift Sportsdome through parks and Truckee River paths into downtown, finishing at Greater Nevada Field.

The start sits at 5,919 feet beneath the Crazy Horse carving, and crushed-limestone rail trail carries the rest of the point-to-point down to Hill City.

A 6:15am gun at Causeway Cove Marina sends this Treasure Coast half along the Fort Pierce Inlet, and the bridge crossing goes underneath instead of over.

Run in Lyon's half links the Saone and Rhone riverfronts with central streets and a Place Bellecour finish on a broad, fast revised city route.

Sarmang Dehradun Marathon is a certified Himalayan foothills road race, combining city streets, elevation changes, and a serious full-distance field.

Silesia Marathon crosses the Upper Silesian metropolis on a point-to-point urban course, with broad roads, industrial landmarks, and late rollers.

Standard Chartered Jersey Marathon circles the Channel Island on rolling roads, joining coastal views, parish villages, and a lively St Helier finish.

Standard Chartered Kuala Lumpur Half Marathon sends runners over 21.0975 kilometres before dawn, with four hours to finish in tropical conditions.

Hanoi’s international marathon connects capital landmarks and long urban roads, with an early start, humid conditions, and a growing regional field.

A federation-labeled Italian half runs an accurately measured, record-eligible road course through Telese Terme, with mild autumn conditions.

Thames Meander Autumn Marathon follows two flat Thames Path loops between southwest London river reaches, combining scenic trail with frequent support.

Ann Arbor's fall marathon links downtown, the University of Michigan, Huron River paths, and rolling park miles on a certified Boston qualifier.

Central Maine's fall marathon starts at Thomas College and follows quiet countryside roads, continuing the Great Waterville Marathon tradition.

Wegmans Wineglass Half Marathon runs point to point from Campbell to Corning, pairing Finger Lakes roads with a fast, gentle net downhill finish.

Windsor Marathon blends paved trail, road, golf-cart path and singletrack around Pelican Lakes, backed by broad Longs Peak views in northern Colorado.

Skopje's established city half uses one measured urban lap, a central start and finish, and broad road running suited to steady autumn pacing.

Wizz Air Skopje Marathon is a fast two-lap city race through North Macedonia's capital, using broad boulevards and a central finish near Macedonia Square.

Antelope Island Marathon brings rolling Great Salt Lake roads, expansive water and mountain views, and possible bison sightings to a rugged Utah race.

Kodiak 100M circles Big Bear Valley over 100.6 mountain miles, reaching Sugarloaf and the Pacific Crest Trail with 15,912 feet of gain in October.

Moab 240 makes one enormous 241.8-mile loop through Utah desert and two mountain ranges, with 31,892 feet of gain, sleep stations, and a 112-hour cutoff.

The West Virginia Trilogy stacks a 50K, a 50 mile, and a half marathon across three October days on mountain trails near Spruce Knob in Circleville.

Yeti 100 Mile Endurance Run delivers a highly runnable rail-trail hundred through southwest Virginia, centered on the Virginia Creeper Trail.

The Arkansas Marathon is a long-running small-town road race from Booneville, offering quiet miles, rolling terrain, and a traditional community finish.

Bemidji Blue Ox Marathon circles Lake Bemidji on paved roads and bike paths, pairing a flat northern Minnesota course with a capped, personal field.

A single road loop of Canandaigua Lake in peak fall color, the CanLake 50 mile has anchored Finger Lakes ultrarunning for more than two decades.

Packed limestone, no roots and no real hills: the marathon on this Lake County river trail is one of the flattest Boston qualifiers within reach of Chicago.

Lisbon Marathon gives runners a coastal Portugal race with bridge and waterfront scenery, fall timing, and strong destination-marathon appeal.

Escalante Canyons Marathon descends a remote scenic byway into town, pairing red-rock views with altitude, open road, and a notably fast finish.

Eversource Hartford Half Marathon links Connecticut's State Capitol, historic neighborhoods and riverfront on a certified city course each October.

Hartford Marathon gives runners a certified New England fall course with a strong city finish, regional depth, and Boston qualifier race value.

Freedom's Run sends marathoners down the C&O Canal towpath and through Antietam National Battlefield, with race proceeds funding community projects.

Gandy Dancer Marathon follows a flat Wisconsin rail trail from Luck, combining a smaller race setting with a certified Boston qualifying course.

Hayden Lake Marathon follows rolling North Idaho roads around its namesake lake, combining autumn color, water views and regional race tradition.

A north Mississippi town square race that spent most of its life as a 10K and now sends a half marathon field out into rural DeSoto County roads.

Holloman Ace of Races Marathon sends runners across a certified high-desert course near the air base, with open views toward surrounding mountains.

A flat, paved-path half based at Hawk Island Park in Lansing, part of the fall cider series with proceeds going to Special Olympics Michigan.

HSN Putrajaya Half Marathon brings a predawn 21K to Malaysia's planned capital, with broad ceremonial roads and demanding tropical conditions.

Nepal's largest city running event starts outside Dasharath Stadium, pairing a 42.195 km capital road course with altitude and an early start.

Run since 1982 on the gravel North Fork Road along the west edge of Glacier National Park, Le Grizz is one of the oldest 50 mile ultras in the country.

Long View Marathon links Fort Collins and Loveland on paved regional trails, with a nearly balanced profile and broad Front Range mountain views.

Oil Creek 100 Mile repeats rugged Gerard Hiking Trail loops near Titusville, accumulating about 17,627 feet of gain under a 32-hour cutoff each year.

A trail half in Paris Mountain State Park near Greenville with about 2,300 feet of climbing, switchbacks, lakeside singletrack, and a run or hike format.

A two-loop marathon on paved park roads in the Poconos, run at 1,760 feet with minimal hills, aid every two miles, and mid-October foliage timing.

Cincinnati's Queen Bee Half combines a 13.1-mile neighborhood tour with an event mission centered on fitness and charities serving women across the region.

Rogue Marathon follows southern Oregon's Bear Creek Greenway on a fast net-downhill route, with cool fall air, river-corridor scenery, and BQ potential.

A choose-your-distance ultra on a certified 4.5-mile Lake Merced loop, where runners hit 50K and decide on the spot whether to press on to 50 miles.

An all-trail half through 820-acre Dr. T.K. Lawless County Park in southwest Michigan, with a non-repeating route, six bridge crossings, and real hills.

WhistleStop Marathon runs point to point on a rail trail into Ashland, pairing a gentle net descent with firm gravel and northern autumn color.

Northeast Iowa bluff country gives this half a point-to-point route on the Great River Road, including four gravel miles high above the Mississippi.

The Mammoth Trail Run puts a 100K and 50K on steep, rocky ranch trails near Glen Rose, Texas, with a 26 hour cutoff that runs deep into the night.

A high-elevation 100-mile crossing of the Sierras Grandes climbs Cerro Champaqui and remote ridges, with 42 hours and limited outside support.

Whiskey Row Marathon climbs from Prescott into the national forest and back, combining high altitude, long grades, pine roads, and a downtown finish.

Named for the Columbia shuttle pilot who grew up in Lubbock, this West Texas half runs flat and open from the Silent Wings Museum into airport country.

A point to point 100 miler across northern Michigan, running Petoskey to Alpena from Lake Michigan to Lake Huron, with 100K, 50K, and relay options.

Anchorage Running Club's October half runs one way from Goose Lake out to Kincaid Chalet on the Chester Creek and Tony Knowles Coastal trails.

A certified point-to-point half marathon in Jalisco runs through the Tlajomulco area near Cajititlán Lagoon, with a large field and early start.

Long Beach Half Marathon keeps the Pacific nearby for most of a flat, certified route through waterfront landmarks and coastal paths in October.

Long Beach Marathon gives runners a certified Southern California course with waterfront miles, fall timing, and accessible qualifier appeal.

Address Run brings a central Sofia half marathon to the Wizz Air race weekend, with a city-center start, broad boulevard miles, and an open field.

Oceanfront miles past the Bellevue Avenue mansions give way to rolling Middletown farm roads, on a fall course that begins and ends at Easton's Beach.

ASML Half Marathon Eindhoven offers a broad, flat 21.1-kilometre city course with wave starts and a lively central finish during a major Dutch weekend.

Eindhoven is built for speed: a flat Dutch course, strong club depth, dense city-center crowds, and one of Europe’s best-known autumn race slots.

Athens' hilly hometown half rolls from downtown through Boulevard and Five Points to a finish lap inside Sanford Stadium, funding music and arts education.

Bruges' autumn half marathon links a start at 't Zand with a Grote Markt finish, threading a central city course through the historic old center.

Bank of America Chicago Marathon is a flat, fast major with 29 neighborhoods, massive crowd support, and one of the cleanest PR courses in the sport.

Beneva Montreal Half Marathon links Parc Jean-Drapeau and Parc Maisonneuve on a large city course with a four-hour limit during Montreal's fall festival.

Montréal’s full marathon anchors a two-day city race weekend, using an urban point-to-point route with neighborhood crowds and a stadium-area finish.

A conservation-linked capital marathon from Ala-Too Square, running 42.2 km through central Bishkek with a 6,000-runner event limit in Kyrgyzstan.

Bizz Johnson follows a converted rail trail through Lassen National Forest, dropping toward Susanville through tunnels, bridges, and canyon miles.

Bournemouth's coastal half runs from Hengistbury Head across cliff tops and promenades, passing two piers before a central seafront finish in town.

Breckenridge Road Marathon starts high in Colorado's mountains and drops from Boreas Pass toward town, rewarding downhill strength and altitude readiness.

Cape Cod’s fall marathon rolls through Falmouth and coastal roads, balancing New England scenery with steady hills, turns, and variable ocean weather.

A Sierra foothills trail half that leaves Nevada City's Broad Street and mixes pavement, gravel, and singletrack with a steady set of Gold Country climbs.

City of Trees Marathon gives Boise a fall full marathon with Greenbelt miles, river scenery, neighborhood support, and a broad slate of shorter races.

Cracovia Royal Half Marathon is a major 21.0975-kilometre road race through Kraków, with a large field and an autumn finish at TAURON Arena.

High-altitude fall marathon in Durango, Colorado, run on paved roads between roughly 6,400 and 6,900 feet with a finish on the Animas River Trail.

Repeat laps of Rockland Lake add up to roughly 135 feet of climbing, which is why time chasers in the lower Hudson Valley treat this as a PR date.

Fall Prairie Fire Marathon offers a flat Wichita Boston qualifier from Equity Bank Park, with city and river miles, pace support, and multiple race distances.

A 71.5 km mountain endurance race through Tokyo's Okutama ridges, starting in the afternoon and pushing most runners deep into the night on steep trail.

Fort Wayne's fall cider run follows the paved River Greenway past Johnny Appleseed's grave, with hot cider and caramel apples at the finish line.

Humboldt Redwoods Marathon runs beneath towering old-growth trees on the Avenue of the Giants, pairing cool forest conditions with a fast certified course.

A rare start on the Vasco da Gama Bridge sends a large field toward Lisbon's riverfront center and a grand Praça do Comércio finish downtown.

Graz turns its city center into a major Austrian race weekend, with a two-lap marathon, frequent turns, and a landmark finish by the opera house.

Munich Marathon gives runners a Bavarian city race with park and landmark sections, fall timing, and a major German event-weekend footprint.

Chester crosses the England-Wales border on rolling roads from the Racecourse, mixing historic city miles, rural lanes, and a River Dee finish.

A small capped field, a flat riverside loop repeated between Dundas and Northfield, and the RRCA Minnesota state marathon championship on the line.

Mohawk Hudson River Marathon follows the river and paved paths toward Albany, using a net-downhill profile that draws Boston-qualifying attempts.

Nantucket's October half fills fast, sending a capped island field over beach roads, bike paths, and short sand patches from Bartlett's Farm.

Nike Melbourne Half Marathon sends a large field through central Melbourne before a signature finish inside the Melbourne Cricket Ground each spring.

Melbourne combines a fast, flat road course with an MCG finish, Albert Park Lake, St Kilda foreshore miles, and large Australian race fields.

A pancake flat lakefront half on the Louisiana Northshore, capped at 1,250 entries with the 10 miler and widely run as a fall personal best attempt.

Novi Sad's central marathon starts and finishes at Freedom Square, pairing a five-hour limit with an urban road course and a compact European field.

Harbor views, rolling roads, club scoring, and a ferry-friendly start make NYRR's Staten Island Half a competitive finale to the Five-Borough Series.

Outway Half Marathon starts and finishes by the Inner Harbour, pairing ocean views with a rolling tour of Victoria and Oak Bay each October.

Oxford Half Marathon presents a flat, closed-road tour of the university city, combining historic streets and a large sold-out field in October.

Closed roads through four Royal Parks carry this ballot-led London half past Buckingham Palace to a Kensington Gardens finish near Royal Albert Hall.

Kyiv Unbroken Marathon brings runners to the Ukrainian capital for a resilient city race that combines competition, fundraising, and public solidarity.

Bucharest gives runners a broad-avenued capital marathon with a flat profile, Parliament Palace backdrop, and a useful autumn slot for goal races.

Royal Victoria Marathon gives runners a scenic Canadian fall race with harbor atmosphere, coastal weather, and destination-weekend race appeal.

A flat, fast fall course follows the winding Snohomish River through quiet farmland and evergreens, starting and finishing in downtown Snohomish.

Sofia’s capital marathon mixes long boulevards, city-center landmarks, and a high-elevation urban setting where cool air and wind shape pacing.

SPAR Budapest Marathon is a Danube-centered capital race with bridge crossings, landmark views, a festival-scale field, and runnable October weather.

Sparkasse 3-Länder-Marathon carries runners from Lindau through Germany, Austria, and Switzerland beside Lake Constance before a Bregenz stadium finish.

Steamtown Marathon gives runners a fast northeastern Pennsylvania course into Scranton, with downhill sections and qualifier-race tradition.

Flat single-loop half outside Houston, run almost entirely on right turns from Smart Financial Centre, with no out-and-back miles to break rhythm.

A Boston-certified October course along the Spokane River and Centennial Trail, with pine forest miles and a relay option in the Inland Northwest.

Valley Harvest Marathon is a rolling Annapolis Valley BQ race through Wolfville, orchards, farms, and Nova Scotia's Grand Pré cultural landscape.

Zagreb Marathon loops through Croatia's capital from Ban Jelačić Square, using long urban avenues, central landmarks, and an energetic city finish.

A central Zagreb half starting and finishing on Ban Josip Jelačić Square, with a city-road course and the energy of a large marathon weekend.

Diagonale des Fous crosses Réunion from Saint-Pierre to Saint-Denis over 175 kilometers and 10,500 meters of climbing through volcanic terrain.

Lake Tahoe Lakeside Marathon traces the lake's east shore from South Lake Tahoe to Incline Village on Friday of the three-marathon Tahoe weekend.

Denmark's dedicated 48-hour race circles a one-kilometer course in Skanderborg, giving runners continuous timing and close access to their crews.

Mount Yun UMY 100M crosses 161 kilometres where the Loess Plateau meets the Taiyue Mountains, with 6,500 metres of ascent and a 48-hour cutoff.

Paducah's American Bluegrass Classic runs four flat loops through downtown and the Lowertown Arts District during the city's fall festival weekend.

Baltimore Half Marathon starts at the Inner Harbor, crosses east Baltimore and joins the full for a shared city-festival finish each October.

Baltimore Marathon gives runners a hilly Mid-Atlantic city course with festival-weekend energy, neighborhood miles, and Boston-qualifier stakes.

The original backyard ultra alternates global team and individual championships on Laz Lake's Tennessee course, where every hour demands another yard.

Australia's satellite championship brings a 15-runner national field to Perth for hourly yards across trail, grass, and asphalt under the bell.

Team Belgium returns to Retie for a 15-runner satellite championship shaped by hourly strategy, team scoring, and deep-yard ambition on forest paths.

Canada's satellite championship assembles a 15-runner national team for synchronized hourly yards, collective scoring, and a national title.

Finland's national backyard team meets for an hourly elimination championship where every completed yard matters to both runner and country.

France's 15-runner satellite team contests an open-ended sequence of hourly yards, balancing national scoring with last-runner survival for the crown.

Germany's national satellite championship shifts between day and night yards in Simmerath as 15 runners build a shared team score for the global table.

Greece's national championship brings 15 selected runners to Kefalonia for hourly trail-and-tarmac yards and synchronized team scoring on an island course.

Japan's selected backyard team joins the synchronized global championship, chasing cumulative yards, a national title, and the road to Big's.

The Netherlands fields 15 selected runners in Leersum, where a repeated hourly yard feeds both the Dutch score and the national-title race outright.

New Zealand's 15-runner national team takes on synchronized hourly yards, with each survival adding to the country score and the last-runner title race.

South Africa's selected team gathers near Potchefstroom for hourly yards at Lekwena Wildlife Estate and a shared global championship score over many hours.

Spain's national team races low-climb gravel-and-asphalt yards in Cartagena, combining individual attrition with synchronized country scoring.

Sweden's 15-runner national squad meets in Bromölla for repeating hourly yards, team points, and the individual last-runner title through autumn darkness.

The United Kingdom's selected team contests synchronized hourly yards, combining a national championship with a cumulative world-team score.

Bilbao's night half runs one illuminated city loop from San Mames toward the Guggenheim, mixing a festival atmosphere with rain-prone autumn weather.

Blackall 100K crosses the Sunshine Coast hinterland on forest trail, deep gullies and exposed ridges, with a full day of climbing through changing terrain.

Blue Sky Trail Marathon covers 26.7 miles of Fort Collins singletrack, red-rock hogbacks, and dirt road with roughly 3,500 feet of climbing.

Cal-Neva Marathon drops point to point from Spooner Summit to Tahoe City's Commons Beach, with a small field and expansive Lake Tahoe views.

Greensboro's fall festival wraps a Friday night 5K around a two-loop marathon on the paved Atlantic and Yadkin Greenway, held to a strict six-hour limit.

Four out-and-back spurs form this fast British trail 100, mixing the Thames Path and Ridgeway with darkness, damp ground and a strict 28-hour cutoff.

Chicago Fall Classic Half Marathon uses a USATF-certified paved trail course along the lakefront, giving autumn runners a fast city racing option.

Repeated canal-side circuits build this 100K in Titusville, creating a crew-friendly Delaware River ultra with simple logistics and steady pacing.

Midland's biggest road race pushes the half marathon off a working ranch and into Permian Basin neighborhoods before the West Texas sun gets high.

Hard-packed sand replaces singletrack in this point-to-point 50K along the Galveston Island shoreline, run west to east with sunrise over the Gulf.

Kansas City Marathon delivers a demanding urban tour of Missouri hills, fountains, and neighborhoods, with the early climbs shaping the entire race.

A city half from Gyeongju Civic Stadium, sharing a heritage-road setting with the full marathon while keeping its own 21.0975 km classification.

Gyeongju Marathon runs through Korea's historic capital from the Civic Stadium, with a five-hour cutoff and cool autumn conditions for the full course.

Hero Half Marathon gives Fayetteville runners a dedicated autumn 13.1-mile road race with community support, local rollers and a public-safety theme.

International Thessaloniki Night Half Marathon follows an evening city route through the port and finishes on Nikis Avenue beside Aristotelous Square.

Kinston's nonprofit half marathon runs a flat, certified loop past the CSS Neuse II gunboat and finishes on the first-base line in Grainger Stadium.

Kansas City Half Marathon links major museums, entertainment districts and historic neighborhoods in a large, energetic autumn tour of the city.

A runnable San Diego 50K on wide dirt trails along Lake Hodges, with the Raptor Ridge climb faced twice on an approachable first-ultra course.

A Kirkland loop that starts and finishes at Juanita Beach Park, follows the Lake Washington shoreline, and comes with pacers and a certified course.

Langdale Marathon completes two exceptionally hilly road laps through the Lake District, with Great Langdale serving as its village race base.

Mankato’s fall marathon combines southern Minnesota roads, a certified Boston-qualifying course, community support, and a distinctive stadium finish.

Mathews Marathon traces very flat coastal backroads across pavement, gravel and dirt, creating a small Virginia Boston qualifier with rural character.

Salomon Cappadocia Ultra-Trail covers 119K through Urgup's valleys and plateaus, mixing runnable trail with a full day of climbing around Cappadocia.

A high-energy half marathon in Santiago's Lo Barnechea district, with Andean views, live music, a four-hour limit, and a start and finish at Los Nogales.

Deep in the PA Wilds, this 50K links rail trail, dirt road, and Elk State Forest running from Emporium, with 25K and 12K races on the same day.

Fall series race on the paved paths around Normandale Lake in Bloomington, with a USATF-certified half and hot cider and caramel apples at the finish.

Urban Bourbon mixes a Louisville road half with Kentucky food, music and bourbon culture, ending in a downtown celebration for runners 21 and older.

Von Trapp Mountain Marathon is a rugged Stowe trail race with long climbs, technical descents, and peak autumn scenery across lodge property.

Indiana's largest women-only half marathon starts at Carmel's Civic Square on a shaded course past parks and ponds, with a cash purse for top finishers.

One long out and back on Manasota Key, the Sandbar half trades turns for shade and open roads, with a 3 hour 30 minute limit and a restaurant finish line.

The Altra Yorkshire Marathon pairs a fast road course with York Minster, lively village support, and open countryside beyond the historic city.

Antwerp Half Marathon follows a measured 21.0975-kilometre urban route from Kattendijkbrug to the MAS, with low climbing and four aid stations.

Atlantic City puts more than ten miles on its famous Boardwalk, with a flat coastal profile, ocean wind, and quiet stretches after the half splits.

Baystate Marathon is a volunteer-run Lowell favorite built for Boston qualifying, with a flat double-loop route and a field that sells out early.

The Sunday closer of Bethlehem's three day running festival, starting and finishing at SteelStacks and crossing the Fahy Bridge into the historic district.

The Buzz Sawyer Western Maryland Marathon runs entirely on the flat Western Maryland Rail Trail from Hancock, named for the founder of the JFK 50.

Champlain Islands Half Marathon traces an out-and-back along South Hero and Grand Isle, passing farms, orchards and Lake Champlain cottages.

A Vermont club marathon capped at 500 runners across both distances, run as two flat laps of the Lake Champlain island shore at peak foliage.

A point-to-point run from downtown San Luis Obispo to the Pacific at Avila Beach, finishing on the Bob Jones Trail after miles of coastal backroads.

Two countries in 13.1 miles make Detroit's international half unique, with bridge and tunnel crossings plus memorable downtown and Midtown miles.

Detroit Free Press Marathon gives runners a rare international course over the Ambassador Bridge and tunnel with Boston-qualifying stakes each fall.

Duke City Marathon showcases Albuquerque's bosque and Rio Grande paths on a high-desert course, with cool fall air, open views, and certified racing.

Eden Project Marathon sends runners through hilly Cornish lanes, trails, and villages before a dramatic finish beside the attraction's giant biomes.

A women-focused half from Vancouver Waterfront Park past Fort Vancouver, run for nearly two decades to raise money for breast cancer support.

Grand Rapids Marathon is a flat Michigan Boston qualifier with parks and paved trails, strong pacing support, and a relaxed regional-race feel.

Grand Trail des Templiers covers 80.7 kilometres and 3,443 metres of climbing across the rugged limestone plateaus and valleys around Millau.

Great New York State Marathon circles Onondaga Lake on a certified Syracuse course, pairing Boston qualifying utility with a fall race weekend.

Mayo High School sends this Rochester half onto the Bear Creek Trail, a mostly paved route with gentle rolling sections rather than a flat park loop.

The IMT Des Moines Half brings a major-race setup to a flat city course, with a shared downtown hub and a generous six-hour scheduled window.

IMT Des Moines Marathon is a flat, fast Iowa goal race with downtown energy, neighborhood support, Boston qualification, and an eight-hour window.

Helena's fall half marathon runs an out-and-back through the city's historic and scenic side, with race proceeds going to local Montana charities.

Lake Tahoe Marathon follows the lake's west and south shores at altitude, serving dramatic Emerald Bay views, major climbs, and a beach finish in one race.

Ljubljana Half Marathon gives runners a separately timed 21.1-kilometre tour of Slovenia's capital during its largest annual running weekend.

Point-to-point through Hunterdon County farm country, this New Jersey half runs from the Red Mill in Clinton out to the hospital campus in Flemington.

Maratón Internacional de Juárez offers a certified border-city road course, a full 42.195 km challenge, and internationally recognized course measurement.

Riverside's Mission Inn Run has nearly five decades of history, and its half marathon tours downtown landmarks to benefit the Mission Inn Foundation.

The Netherlands' largest half runs from Stadionweg through eastern Amsterdam before delivering a stadium finish and a strict three-hour limit.

Detroit's domestic half tours downtown, Midtown, Woodbridge, Eastern Market and Lafayette Park before finishing at Campus Martius Park on race day.

Mount Desert Island Marathon is a hilly Maine point-to-point from Bar Harbor to Southwest Harbor, with Acadia scenery and Boston qualification.

Columbus Half Marathon pairs a large, fast city race with Nationwide Children's Hospital patient champions stationed along the course each October.

Columbus Marathon gives runners a flat Ohio city course, strong charity identity, downtown logistics, and a practical October fall race target.

NLB Ljubljana Marathon is a Gold Label capital race with a compact city-center setting, fast road course, broad fields, and cool October timing.

Rolling loop through the neighborhoods and parkland south of Reading Hospital, this pacer-supported West Reading half doubles as a hospital fundraiser.

A Fairfield County fall fixture since the 1970s, the Ridgefield half runs two rolling loops through the south end before a fast downhill into town.

Long Island's county marathon runs from Babylon Village over the Robert Moses Causeway to a Bay Shore park finish, raising money for local veterans.

A 1,500-runner Taichung road marathon starting in Tanzi District, with a 6.5-hour limit and a compact field across four race distances in Taiwan.

Amsterdam Marathon pairs a World Athletics Platinum Label field with a fast course, Olympic Stadium finish, Rijksmuseum pass, and Amstel miles.

Toronto’s major fall half combines a fast downtown and Lake Ontario route with big-race crowds and a Nathan Phillips Square finish in October.

Toronto Waterfront gives runners a major Canadian fall marathon with lakefront miles, Sportstats timing, and a fast Boston-qualifying course.

Tucson's only locally produced half marathon climbs Sentinel Peak in the opening miles, then flattens out along the Santa Cruz Riverpath for the rest.

Tokyo Legacy Half Marathon uses a certified National Stadium course with a deep field, tight cutoff, and central Tokyo racing without marathon distance.

TREK Antwerp Marathon threads port landmarks, central avenues, and Scheldt quays before finishing near MAS, on a city course designed for quick running.

TUI Palma Half Marathon pairs a certified 21.1-kilometre road race with cathedral, marina and Mediterranean seafront views in Mallorca's capital.

Palma combines a Mediterranean waterfront start with old-city turns, warm autumn sun, and a multi-lap marathon that rewards disciplined early pacing.

Vedanta Delhi Half Marathon brings an international elite field and a mass-participation 21.097-kilometre race to India's capital each autumn.

Wade Mountain Marathon tackles technical, low-traffic trails on protected greenspace near Huntsville, framed by colorful North Alabama fall foliage.

Wizz Air Rome Half Marathon gives runners a fast 21.0975-kilometre course through the capital, with a large international field and landmark scenery.

Dongying's Yellow River Estuary Marathon uses broad, flat Shandong avenues and a wetland-city setting, with coastal wind the main pacing variable.

Yerevan Marathon explores Armenia's high-altitude capital from Republic Square, mixing broad avenues, park roads, city views, and steady urban climbing.

Yerevan's certified half marathon moves from the city center toward the Hrazdan gorge, mixing historic streets, elevation changes and capital-city energy.

A six-stage 330 km expedition through Western Cape valleys, vineyards, mountain passes, and Cederberg wilderness, with remote camps each night.

Damascus Marathon brings a full 42.195 km city race to the Syrian capital, with central streets, organized support and several companion distances.

A compact riverside loop in Brugg hosts Switzerland's 48-hour championship, where steady lap accumulation and efficient support define the race.

I Sassi di Matera crosses 144 kilometres from Matera's cave districts to the Ionian coast through limestone canyons, olive groves and scrub.

Vorarlberg's Austria Backyard Ultra repeats a 6.706-kilometer yard every hour from Thüringen, continuing through the night until one runner remains.

Beachy Head Marathon crosses the South Downs and Seven Sisters on a steep off-road route with chalk cliffs, village paths, steps, gates, and sea views.

Emerald Isle Marathon is a flat coastal BQ race on North Carolina's Crystal Coast, with oceanfront staging and long, exposed barrier-island roads.

Peterson Ridge singletrack carries this women's-focused half through central Oregon pine forest, on a capped field that fills before race week.

A flat, USATF-certified late-October half on Milwaukee's Oak Leaf Trail from Estabrook Park, with cider and caramel apples waiting at the finish.

Two laps of a climbing 25K loop give this north Alabama trail 50K over 5,000 feet of gain on Two Mountain Trail singletrack above McMullen Cove.

Jakarta's major festival half starts before dawn at Gelora Bung Karno, with a large city field, certified roads, deep humidity, and a generous cutoff.

Luang Prabang's charity half starts at the Royal Palace and traces temple-lined streets and river roads through the World Heritage city center.

Run on an island with no cars: ferry over, start on the Mackinac shoreline, then climb inland onto dirt and gravel trails before a lakeside finish.

Marathon Eryri is a demanding mountain-road classic around Yr Wyddfa, with two major climbs, a short farm-track sector, and rugged Welsh weather.

Marathon2Marathon runs through West Texas high desert on a gradual downhill course, finishing in the town of Marathon with Boston qualifying status.

A Halloween half marathon inside Kensington Metropark, running a mostly flat shoreline course from Maple Beach with costumes all over the field.

Polar Circle Marathon crosses Greenlandic tundra and part of the ice sheet near Kangerlussuaq, demanding mandatory traction and true Arctic preparation.

A trail 50K on the grounds of Camp Croft, the WWII infantry training center turned state park, built as a tribute to prisoners of war and veterans.

Purdue students, alumni, and regional clubs fill this late October campus half, which starts outside Ross-Ade Stadium and mixes roads with city bike paths.

A flat two-loop half run entirely on the Rockaway Beach boardwalk in Queens, with the Atlantic alongside from start to finish at Beach 94th Street.

Sea Witch weekend half inside Cape Henlopen State Park, running from Fort Miles past Herring Point to Gordons Pond on quiet park roads and paved trail.

Spinx Run Fest Marathon tours Greenville and the Swamp Rabbit Trail on a certified fall course, with downtown energy, greenway miles, and rolling terrain.

One of India's highest road marathons starts from Tawang's high-altitude stadium, pairing a 42.195 km mountain course with a long race window.

Capped at 500 runners, this Missouri resort half rolls over five dams and past private lakes on a hilly mix of pavement and smooth gravel roads.

Twenty years of Greensboro trail racing around Lake Brandt, Lake Townsend, and Lake Jeanette, with runnable singletrack and generous cutoffs.

Chattanooga's oldest marathon crosses seven bridges over the Tennessee River and North Chickamauga Creek, on a small October loop with aid nearly every mile.

Aguascalientes offers a high-altitude Mexican city marathon with rolling streets, a serious local field, and cool-to-warm autumn race conditions.

A coastal Jeju half from Gujwa Sports Ground, following the Gimnyeong and Pyeongdae shore roads with open sea views and a three-hour road limit.

Closed roads along the Lake Pontchartrain shoreline give this Halloween half a flat profile and a costume-heavy field well clear of the French Quarter.

The Binational Half Marathon runs from San Diego to Tijuana, crossing the U.S.-Mexico border before climbing Enchilada Hill and finishing by the Pacific.

An oceanfront city marathon from the Hassan II Mosque through Casablanca's corniche and central districts, with a six-hour limit and broad public field.

Chengdu’s major city marathon brings a deep Chinese field to broad urban roads, with a fast profile, dense race-day logistics, and lottery demand.

A 10,000-runner Chengdu half starting at the Jinsha Site Museum and finishing at Sichuan University's Wangjiang campus after a broad city route.

One of Korea's signature autumn marathons circles Uiam Lake from Gongjicheon Bridge, combining a certified road course with cool-weather racing.

Disney Wine & Dine Half Marathon combines a pre-dawn 13.1-mile run at Walt Disney World with park entertainment and an EPCOT party in late October.

Dresden's scenic city half crosses the Elbe, tours Neustadt and the Grand Garden, then returns to a stadium finish on a broad autumn road course.

DRESDEN-MARATHON pairs a fast city course with Elbe river miles, baroque landmarks, park sections, and a stadium finish during a two-day race festival.

Flat rail trail half in northwest Indiana where entry stays cheap, the course holds a USATF certification, and finishers bank Race the Region points.

An 8,500-runner Taipei half starting before sunrise at Presidential Office Plaza, with four hours allowed and long stretches toward the riverside.

Taipei's EVA Air Marathon sends runners from the Presidential Office Plaza to Dajia Riverside Park in a large, early-start city-to-river race.

Garmin Run Singapore pairs a Marina Barrage half marathon with waterfront paths, a four-hour cutoff, and Singapore's persistent tropical humidity.

Hixon 50 sends ultrarunners up La Crosse's river bluffs twice, packing roughly 8,000 feet of climbing into a 50K of singletrack above the Mississippi.

Green Bay's late-October half starts downtown on Washington Street and follows the Fox River Trail, with hot cider and caramel apples at the finish.

Zorinsky Lake Park anchors this Omaha half, a certified paved course with less than 100 feet between the highest and lowest points on the whole route.

Dublin gives runners a ballot-entry autumn marathon with city-center crowds, Phoenix Park miles, and a finish that rewards steady late pacing.

Jakarta's full marathon leaves Gelora Bung Karno and tours the capital's major roads and landmarks, with predawn humidity and a strict cutoff shaping strategy.

Kanazawa blends a serious Japanese city marathon with neighborhood aid, varied urban scenery, and late-race rollers that punish careless pacing.

Kochi Spice Coast Marathon brings runners through historic Fort Kochi and waterfront streets, combining Kerala culture with a humid tropical challenge.

Lausanne's half marathon follows the Lake Geneva shoreline and Lavaux corridor before a Bellerive-Plage finish framed by water and Alpine views.

Lausanne Marathon follows Lake Geneva between Lausanne and La Tour-de-Peilz, with a scenic out-and-back route and persistent rolling terrain.

Lille Half Marathon brings runners through the metropolitan center on a flat 21.097-kilometre road course designed for fast autumn racing in northern France.

Lubbock Marathon is a West Texas city race with an exposed, mostly flat profile, straightforward logistics, and plenty of room to settle in.

Mae Moh is a labeled northern Thailand half marathon through reservoirs, mine landscapes, and limestone hills, backed by a long-running regional event.

Frankfurt pairs a flat German city course with deep fall-marathon demand and a distinctive red-carpet finish inside Frankfurt's Festhalle venue.

Malibu's half marathon runs entirely on Pacific Coast Highway, an out-and-back from Zuma Beach up to Nicholas Canyon and back over coastal rollers.

Marine Corps Marathon combines a Pentagon-area start, DC landmarks, late gauntlet cutoffs, and a USATF-certified Boston-qualifying DC course.

Niagara Falls Half Marathon pairs a 13.1-mile Ontario road race with views of the falls, an 8:15 a.m. start and a strict early checkpoint in late October.

Niagara Falls International Marathon is a scenic Canadian Boston qualifier with river roads, Horseshoe Falls views, and a dramatic finish setting.

Coastal Rhode Island miles from Narragansett Town Beach through Bonnet Shores and old farmland on a USATF-certified Boston-qualifying course.

RDC Marathon connects Durham, Research Triangle Park, and greenway miles on a fast fall course, giving North Carolina runners a regional Boston qualifier.

Weston's Kiwanis half loops past the Saugatuck Reservoir on quiet Connecticut back roads, with a fast river stretch and a long climb waiting in mile 12.

Portsmouth's late-October half sends close to a thousand runners through Rye and New Castle on a flat coastal loop, with all net proceeds to one nonprofit.

SHARP HSNKL Half Marathon sends a large predawn field from Dataran Merdeka through central Kuala Lumpur under hot, humid tropical conditions.

Nairobi's flagship race-week half follows the Southern Bypass beside the national park, sharing a 30,000-runner event and a major Kenyan prize purse.

Kenya’s largest city marathon runs from the Southern Bypass to Uhuru Gardens, pairing a huge public field with elite depth and an early start.

Lucerne’s lakeside marathon uses two laps past the city, lake, and Horw countryside, with polished logistics and a strong late-October calendar slot.

GO! St. Louis takes its costume-heavy fall race weekend to Eureka, where the half follows country roads along the Meramec River into Route 66 State Park.

The Haunted Forest Marathon turns an extremely flat Ohio towpath into a themed fall BQ, with only modest elevation change across 26.2 miles.

Tirana's half marathon gives runners a separately scored 21.0975-kilometer city road race within the Albanian capital's annual marathon weekend.

Albania's largest city running event brings a 42.195 km marathon through central Tirana, with thousands of local and international runners each year.

A 6:30 am Halloween start from Stuart Beach, this Treasure Coast club race pairs a flat barrier island course with a costume contest and a three person relay.

Tri-Cities Marathon follows the Columbia River through Richland, Pasco, and Kennewick, using paved paths, several bridges, and open river views.

A 3,000-runner marathon through historic Turkistan, built around a gentle 42.195 km road course with roughly 70 meters of total elevation gain.

Valencia pairs a record-caliber elite field with a precisely measured, exceptionally flat SuperHalfs course built for fast road racing in autumn.

Venice Half Marathon runs 21.097 kilometres from Mestre into the lagoon city, finishing beyond fourteen canal bridges at Riva Sette Martiri.

Venice Marathon gives runners an Italian destination course into the lagoon city, with late-October timing and landmark-heavy finish appeal.

Yokohama Marathon combines Minato Mirai waterfront landmarks with a long closed expressway section and a large, exceptionally supported field.

The Himalayan 100 Mile Stage Race crosses five high-altitude days near Darjeeling, mixing steep jeep roads, mountain huts, jungle descents, and thin air.

Chartreuse Backyard repeats a flat riverside 6.706 km yard beneath the mountains, making a fast French silver race built for deep totals in cool weather.

Kullamannen Ultra 100 Miles runs 173 kilometres across southern Sweden's rocky coasts and reserves in darkness, wind and autumn weather in late October.

Mallorca by UTMB's Serra de Tramuntana crosses 138K of dry-stone paths, limestone ridges, and village mountain terrain between coast and Port de Soller.

Endure the Moor brings the backyard format to Newcastle's Town Moor, repeating a mixed 4.167-mile loop every hour until only one runner can answer the bell.

Costumes and a 7am gun inside Fort De Soto Park, where a flat barrier island half marathon runs on Halloween morning at the mouth of Tampa Bay.

A coastal half marathon around Corralejo crosses the volcanic and sandy landscape of Fuerteventura's dunes, with Atlantic wind adding a tactical challenge.

An 11am course closure and a no walkers rule give this flat Galena River Trail half the strictest cutoff of any autumn race in northwest Illinois.

Historic Drawbridge Running Festival Marathon crosses Eastern Shore drawbridges on a flat point-to-point route that finishes in St. Michaels.

Javelina Jundred is a desert 100-miler at McDowell Mountain, blending rolling Sonoran singletrack, loops, heat management, and a party finish.

Mission Mt Somers Marathon crosses technical Canterbury high-country trails, climbing from Staveley into exposed tussock, forest, and alpine terrain.

Naatsisaan's 50K arcs around Lost Mesa from Navajo Mountain High School, combining dirt road, old doubletrack and trail in Diné Bikéyah in remote Utah.

Ozark Trail 100 Mile Endurance Run crosses 101 miles of Mark Twain National Forest on remote singletrack with about 12,000 feet of rugged climbing.

Flat rail-trail racing outside Atlanta: the Silver Comet Marathon runs out and back on a paved former rail line with grades gentle enough for PR attempts.

Albuquerque's Running Fiesta pairs a downtown festival weekend with one of the flattest certified marathon courses anywhere, about 51 feet of gain.

Auckland Half Marathon crosses the Harbour Bridge on a point-to-point city course from Devonport to a waterfront finish at Victoria Park in spring.

Auckland Marathon crosses the Harbour Bridge on a point-to-point city course, pairing waterfront scenery with early climbs and a flatter finish.

Bass Pro's Conservation Marathon tours Springfield neighborhoods, paved trails, Route 66, downtown, and Missouri State on a mostly flat Boston qualifier.

Bowling Green's bg26.2 Marathon mixes downtown streets, Western Kentucky University, and rolling neighborhoods on a certified local BQ course.

Thousands run this flat USATF course down Memorial Drive past MIT and Harvard Stadium, the last fast road half on the Boston autumn calendar.