Ultramarathon · Country guide

US Ultramarathons

The U.S. ultramarathon calendar spans mountain hundreds, desert crossings, road classics, timed events, and approachable first ultras. Distance alone does not describe the challenge, so this collection helps runners compare date, location, terrain context, and race history across the country.

Showing all 151 races in this collection. Updated September 2026.

Notable race guides: Western States 100, Hardrock 100, Leadville Trail 100 Run, and Badwater 135.

  1. Bear 100 MileFriday, September 25, 2026Logan, UtahBear 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.Results
  2. Hinson Lake 24 Hour Ultra ClassicSaturday, September 26, 2026Rockingham, North CarolinaTimed raceA 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.Results
  3. Sangre de Cristo Trail FestivalSaturday, September 26, 2026Westcliffe, ColoradoA 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.
  4. Sky Island Trail RaceSaturday, September 26, 2026Fort Davis, TexasSky 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.Results
  5. The Lakes TrailFestSaturday, September 26, 2026Palmer, AlaskaThe Lakes TrailFest closes Alaska's fall trail season with a 50K, 25K, 10K, and 5K on rolling wooded singletrack at Matanuska Lakes near Palmer.Results
  6. Farm to Farm Ultra 50 MileSunday, September 27, 2026Freeport, MaineFarm to Farm's 50-mile loop race links Wolfe's Neck Center and conservation trails in Freeport, offering repeated aid access on mixed trail.
  7. Vermont 50 Ultra RunSunday, September 27, 2026Brownsville, VermontVermont 50 Ultra Run covers fifty miles of private trails, woods roads and steep Green Mountain terrain around Mount Ascutney each early autumn.Results
  8. Angeles Crest 100 Mile Endurance RunSaturday, October 3, 2026Altadena, CaliforniaAngeles Crest 100 is a Southern California mountain 100-miler through the San Gabriels, known for heat, altitude swings, and old-school endurance.Results
  9. Arkansas Traveller 100Saturday, October 3, 2026Perryville, ArkansasArkansas 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.Results
  10. Cuyamaca 100KSaturday, October 3, 2026Julian, CaliforniaCuyamaca 100K traverses oak woodland, pine forest, chaparral and desert-edge trail near San Diego, with a 19-hour limit and live pods each October.Results
  11. Hennepin Hundred 100 MileSaturday, October 3, 2026Sterling, IllinoisHennepin Hundred 100 Mile follows Illinois' historic canal trail from Sterling toward Colona on a flat, fast and highly runnable point-to-point route.Results
  12. Whitefish Trail Blazer 50KSaturday, October 3, 2026Whitefish, MontanaAbout 6,300 feet of climbing carries this Montana 50K to the summit of Big Mountain, with proceeds funding Whitefish Trail building and upkeep.
  13. HOKA Kodiak Ultra Marathons by UTMB 100MFriday, October 9, 2026Big Bear Lake, CaliforniaKodiak 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.
  14. Moab 240Friday, October 9, 2026Moab, UtahMoab 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.
  15. West Virginia TrilogyFriday, October 9, 2026Circleville, West VirginiaThe 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.
  16. Yeti 100 Mile Endurance RunFriday, October 9, 2026Damascus, VirginiaYeti 100 Mile Endurance Run delivers a highly runnable rail-trail hundred through southwest Virginia, centered on the Virginia Creeper Trail.Results
  17. CanLake Ultras 50 MileSaturday, October 10, 2026Canandaigua, New YorkA single road loop of Canandaigua Lake in peak fall color, the CanLake 50 mile has anchored Finger Lakes ultrarunning for more than two decades.
  18. Le Grizz 50 Mile UltramarathonSaturday, October 10, 2026Polebridge, MontanaRun 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.
  19. Oil Creek 100 MileSaturday, October 10, 2026Titusville, PennsylvaniaOil 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.
  20. Ruth Anderson Memorial Endurance RunSaturday, October 10, 2026San Francisco, CaliforniaA 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.
  21. The Mammoth Trail RunSaturday, October 10, 2026Glen Rose, TexasThe 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.
  22. Wolverine State 100Saturday, October 10, 2026Petoskey, MichiganA point to point 100 miler across northern Michigan, running Petoskey to Alpena from Lake Michigan to Lake Huron, with 100K, 50K, and relay options.
  23. Big Dog's Backyard UltraSaturday, October 17, 2026Bell Buckle, TennesseeBackyard ultraThe original backyard ultra alternates global team and individual championships on Laz Lake's Tennessee course, where every hour demands another yard.
  24. Delaware River Loop Series 100KSaturday, October 17, 2026Titusville, New JerseyRepeated canal-side circuits build this 100K in Titusville, creating a crew-friendly Delaware River ultra with simple logistics and steady pacing.
  25. Galveston Ultra Trail 50KSaturday, October 17, 2026Galveston, TexasHard-packed sand replaces singletrack in this point-to-point 50K along the Galveston Island shoreline, run west to east with sunrise over the Gulf.
  26. Lake Hodges Trail Festival 50KSaturday, October 17, 2026San Diego, CaliforniaA runnable San Diego 50K on wide dirt trails along Lake Hodges, with the Raptor Ridge climb faced twice on an approachable first-ultra course.
  27. Sinnemahone Ultra Trail Run 50KSaturday, October 17, 2026Emporium, PennsylvaniaDeep 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.
  28. Huntsville Runfest 50KSaturday, October 24, 2026Gurley, AlabamaTwo 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.
  29. Prisoner of War 50KSaturday, October 24, 2026Spartanburg, South CarolinaA 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.
  30. Hixon 50Sunday, October 25, 2026La Crosse, WisconsinHixon 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.
  31. Javelina JundredSaturday, October 31, 2026Fountain Hills, ArizonaJavelina Jundred is a desert 100-miler at McDowell Mountain, blending rolling Sonoran singletrack, loops, heat management, and a party finish.Results
  32. Naatsisaan Ultra 50KSaturday, October 31, 2026Navajo Mountain, UtahNaatsisaan's 50K arcs around Lost Mesa from Navajo Mountain High School, combining dirt road, old doubletrack and trail in Diné Bikéyah in remote Utah.
  33. Ozark Trail 100 Mile Endurance RunSaturday, October 31, 2026Steelville, MissouriOzark Trail 100 Mile Endurance Run crosses 101 miles of Mark Twain National Forest on remote singletrack with about 12,000 feet of rugged climbing.Results
  34. Pinhoti 100Saturday, November 7, 2026Sylacauga, AlabamaPinhoti 100 follows a rugged point-to-point line across Alabama's highest terrain, combining long singletrack, jeep roads and rocky forest ridges.Results
  35. Race for DFLSaturday, November 7, 2026Winchendon, MassachusettsBackyard ultraRace for DFL makes last place the goal on a 4.167-mile Massachusetts farm yard, mixing trail, gravel, grass, a bonfire, and community aid in one loop.
  36. Rio Del Lago 100 MileSaturday, November 7, 2026Folsom, CaliforniaRio Del Lago 100 Mile starts at Beal's Point and crosses Sierra foothill trails east of Sacramento, returning for its twenty-fifth running each November.Results
  38. HOKA Pacific Trails California by UTMB 50KSaturday, November 14, 2026Santa Barbara, CaliforniaA 51 km point-to-point trail across a private Santa Barbara ranch pairs 1,550 metres of climbing with oak canyons, ridgelines, and Pacific glimpses.
  39. RYR Endurance 50KSaturday, November 14, 2026Owensboro, KentuckyA flat 50K on paved greenway loops in Owensboro, Kentucky, with aid roughly every mile, easy crew access, and a weekend of shorter distances.
  40. Tunnel Hill 100 MileSaturday, November 14, 2026Vienna, IllinoisTunnel Hill 100 Mile uses the flat, fast Tunnel Hill State Trail in southern Illinois, a course known for elite times and record attempts each November.Results
  41. Dinosaur Valley 100 MileSaturday, November 21, 2026Glen Rose, TexasDinosaur Valley 100 Mile loops through a North Texas state park, accumulating gradual climbs and technical fatigue across rocky, mixed trail.Results
  42. Hit The Road, Jack! 50KSaturday, November 21, 2026Carthage, MissouriMissouri's RRCA 50K state championship runs out-and-back on the flat, shaded Ruby Jack rail-trail in Carthage, with certified splits and cash prizes.
  43. JFK 50 MileSaturday, November 21, 2026Boonsboro, MarylandJFK 50 Mile blends rocky Appalachian Trail, flat C&O Canal towpath, and rolling Maryland roads in one of America's oldest and fastest ultramarathons.
  44. Colorado River Run 100 MileFriday, November 27, 2026Marble Falls, TexasA Thanksgiving weekend trail ultra at Turkey Bend on the Texas Colorado River, running 100 mile and 50 mile races before Saturday's 50K and marathon.
  45. Bigfoot 50KSaturday, December 5, 2026Kimbolton, OhioBigfoot 50K closes the Ohio trail season in December at Salt Fork State Park, where three hilly bridle-trail loops usually come with serious mud.
  46. Brazos Bend 100 MileSaturday, December 5, 2026Needville, TexasBrazos Bend 100 Mile uses flat crushed-rock and park trails in coastal Texas, with alligators, a 32-hour limit and Western States demand each December.Results
  47. Crooked Creek Ultra 100 MileSaturday, December 5, 2026Shepherdsville, KentuckyEight laps of a hilly 12.7-mile loop make up this December 100 miler at Camp Crooked Creek south of Louisville, with 2,300 feet of climb per lap.
  48. Jackson County Ultras 100KSaturday, December 5, 2026Brownstown, IndianaA December 100K through the ridges of Jackson-Washington State Forest in southern Indiana, with about 9,200 feet of climbing and a 24-hour cutoff.
  49. Ray Miller 50 MilerSaturday, December 5, 2026Malibu, CaliforniaRay Miller's 50-mile course brings nearly 14,000 feet of gain and loss to Point Mugu trails, with ocean views, steep fire roads, and a 15-hour limit.Results
  50. Ray Miller 50KSaturday, December 5, 2026Malibu, CaliforniaThe Ray Miller 50K packs nearly 6,000 feet of gain and loss into Point Mugu State Park, with exposed ridges, ocean views, and steep coastal trails.Results
  51. San Joaquin River Trail 50KSaturday, December 5, 2026Friant, CaliforniaA December trail 50K along Millerton Lake and the San Joaquin River, with about 5,500 feet of climbing on Sierra foothill singletrack near Fresno.
  52. Daytona 100Saturday, December 12, 2026Jacksonville Beach, FloridaDaytona 100 follows Florida's Atlantic barrier island from Jacksonville Beach toward Ponce Inlet on a paved, point-to-point 100-mile route each December.
  53. Desert Solstice 100 MileSaturday, December 19, 2026Phoenix, ArizonaDesert Solstice 100 Mile is an elite invitational track ultra in Phoenix, designed for precise pacing, fast splits, records and national-team standards.Results
  54. Desert Solstice 24 HourSaturday, December 19, 2026Phoenix, ArizonaTimed raceAn elite 24-hour invitational chases national and world marks on a flat 400-meter Phoenix track, with live splits and only 25 total starting places.
  55. Across the Years 100 MileMonday, December 28, 2026Peoria, ArizonaAcross the Years 100 Mile offers a fixed-distance ultra within a six-day New Year running festival on a compact, accurately measured desert loop.Results
  56. Across the Years 6 DayMonday, December 28, 2026Peoria, ArizonaTimed raceAcross the Years gives runners six continuous days to build distance on a 1.42-mile mixed-surface loop, carrying the race through New Year's Day.
  57. Dizzy Horse, A Winter Backyard UltraFriday, January 8, 2027Idaho Falls, IdahoBackyard ultraA true winter backyard ultra in Idaho Falls, mixing horse track, desert, dirt, grass and pavement with heated indoor transition space beside the fairgrounds.Results
  58. Avalon Benefit 50 MileSaturday, January 9, 2027Avalon, CaliforniaAvalon Benefit 50 Mile crosses Catalina Island on a historic trail-ultra route, pairing steep, rugged interior terrain with Pacific Ocean views.Results
  59. Bandera 100KSaturday, January 9, 2027Bandera, TexasBandera 100K delivers two rocky Texas Hill Country loops where steep short climbs, loose footing, and sharp sotol make every mile more technical.Results
  60. Salem Lakeshore Frosty Fifty 50KSaturday, January 9, 2027Winston-Salem, North CarolinaFour 12.5K loops of wide, rolling dirt trail around Salem Lake give Winston-Salem a January 50K with 25K, 12.5K, relay, and night 5K options nearby.
  61. San Diego 50 MileSaturday, January 9, 2027Escondido, CaliforniaSan Diego County's midwinter 50 miler runs San Pasqual Valley single track and fire road near Escondido, topped by a long climb to Raptor Ridge.
  62. HURT 100Saturday, January 16, 2027Honolulu, HawaiiHURT 100 packs 24,500 feet of climbing into rooty Oahu rainforest loops, with tropical humidity, stream crossings, and a demanding 36-hour cutoff.Results
  63. MAD Backyard UltraSaturday, January 16, 2027East Ridge, TennesseeBackyard ultraA flat 4.167-mile circuit through Camp Jordan Park makes this East Ridge backyard approachable early, while the hourly resets punish late pacing.Results
  64. Cactus Roulette Endurance Event 24 HourSaturday, January 23, 2027Lawrence, KansasTimed raceA 24-hour trail race at Clinton Lake lets a roulette wheel choose each runner's next loop, mixing three technical and cross-country circuits from one base camp.Results
  65. Go Very Long 50KSaturday, January 23, 2027Tulsa, OklahomaTulsa's paved River Parks trail keeps this winter 50K mostly flat, with two passes over its principal hill and a 9.5-hour time limit on race day.
  66. Saguaro Showdown Backyard UltraSaturday, January 23, 2027Mesa, ArizonaBackyard ultraA desert backyard ultra at Usery Mountain, with 4.1667-mile trail day yards, a road loop after dark and a separate last-runner-standing field.Results
  67. Death at DuPuisSaturday, February 6, 2027Canal Point, FloridaBackyard ultraFlat South Florida loops switch from grassy singletrack by day to gravel at night, with heat, humidity and a Bronze Ticket adding to the pressure.Results
  68. Frozen 50KSaturday, February 6, 2027Cassadaga, New YorkTen laps around Cassadaga's Lower Lake make up this no-frills 50K fundraiser, with flexible distance choices and no formal cutoff clock in winter.
  69. Rocky Raccoon 100Saturday, February 6, 2027Huntsville, TexasRocky Raccoon 100 is a fast, crew-friendly Texas hundred built from five forest loops, where roots and accumulated fatigue replace mountain-sized climbs.Results
  70. The Raven 24-HourSaturday, February 6, 2027Mount Pleasant, South CarolinaTimed raceA record-eligible 24-hour track race in Mount Pleasant targets national-team standards on a lighted 400-meter oval with electronic lap display.Results
  71. Black Canyon 100KSaturday, February 13, 2027Mayer, ArizonaBlack Canyon 100K runs point-to-point through central Arizona desert from Mayer toward Phoenix, with fast net downhill miles and rugged trail sections.Results
  72. Woolley Trail Runs 50KSaturday, February 13, 2027Sedro Woolley, WashingtonA slight uphill outbound grade and matching downhill return define this low-key 50K on a railroad-grade gravel trail near Sedro-Woolley in winter.
  73. David's Trail Endurance Run 50KSaturday, February 27, 2027Mountain Home, ArkansasRocky singletrack above Lake Norfork gives David's Trail Endurance Run 50K nearly 5,000 feet of elevation change and a hard late-winter Ozark test.
  74. Lake Vian Hilltop Run 100 MileSaturday, February 27, 2027Vian, OklahomaLake Vian's two-mile loop mixes pavement and wooded singletrack, bringing 100-mile runners past aid and the cheer zone on every Oklahoma circuit.
  75. Queeny Backyard UltraFriday, March 5, 2027Manchester, MissouriBackyard ultraQueeny Park's rolling 4.19-mile loop mixes pavement, packed gravel and short dirt sections, with roughly 430 feet of climbing every hour in St. Louis.Results
  76. ChesCo Race Fest 50KSaturday, March 6, 2027Wayne, PennsylvaniaChesCo Race Fest builds its 50K from a flat 1.25-mile park loop, giving crews constant access and runners heated bathrooms between winter laps.
  77. Crazy Desert Trail Race 100KSaturday, March 6, 2027San Angelo, TexasDesert singletrack at San Angelo State Park, where a March 100K crosses cactus flats and rocky hills with aid every few miles and a 24-hour limit.
  78. Hachie 50Saturday, March 6, 2027Waxahachie, TexasHachie 50 is a flat, fast 50 miler on tree-lined park paths in Waxahachie, a club-run March race that suits first 50s and time goals in equal measure.
  79. The Pistol UltraSaturday, March 13, 2027Alcoa, TennesseeThe Pistol Ultra is a fast paved greenway loop race in Alcoa, Tennessee, with 50K through 100 mile fields, a night 50 miler, and easy crew access.
  80. Blackbeard's Revenge 100Saturday, March 20, 2027Corolla, North CarolinaBlackbeard's Revenge 100 runs the full length of the Outer Banks from Corolla to Hatteras, a paved point-to-point 100 miler ruled by coastal wind.
  81. Capital Backyard UltraSaturday, March 20, 2027Lorton, VirginiaBackyard ultraA small-field Virginia backyard ultra built for deep efforts, with rolling trail day yards, a fast paved night loop and chef-supported aid near DC.Results
  82. Ohio's Backyard UltraSaturday, March 20, 2027Lucasville, OhioBackyard ultraOhio's established backyard alternates a rugged 4.167-mile trail yard with a faster paved night loop, drawing deep fields to rural Lucasville.
  83. Umstead 100Saturday, April 3, 2027Raleigh, North CarolinaUmstead 100 gives runners a supported 100-mile loop race through William B. Umstead State Park near Raleigh, with a generous 30-hour time limit.Results
  84. OAT Run 50KSaturday, April 10, 2027Port Angeles, WashingtonThe OAT Run 50K is an out-and-back on Olympic Adventure Trail singletrack, threading mossy forest between Olympic National Park and the Strait.
  85. Zion 100 MileSaturday, April 10, 2027Apple Valley, UtahZion 100 Mile crosses high-desert mesas, slickrock, technical singletrack and exposed rim country near Zion National Park in rugged southern Utah.Results
  86. Banana Slug Backyard UltraFriday, April 23, 2027St. Paul, OregonBackyard ultraAn open-ended Oregon backyard ultra with wooded riverfront day yards, paved night laps and a proven record of deep last-person-standing races.Results
  87. Canyons 100MFriday, April 23, 2027Auburn, CaliforniaCanyons 100M is a Sierra foothills UTMB World Series Major from China Wall to Auburn, built around runnable climbs, canyons, and Western States terrain.Results
  88. Canyons 100KSaturday, April 24, 2027Auburn, CaliforniaCanyons 100K is a competitive Auburn-area ultra with China Wall start lines, canyon descents, UTMB Major status, and Western States stakes in spring.Results
  89. Thumb Coast UltraSaturday, April 24, 2027Caseville, MichiganThumb Coast Ultra runs 50 miles point to point across Michigan's Thumb from Harbor Beach to Caseville, mostly on quiet dirt roads, with a 50K option.
  90. Spokane River Run 50KSunday, April 25, 2027Nine Mile Falls, WashingtonOne of the Pacific Northwest's older trail events, Spokane River Run builds its 50K through riverside singletrack on a volunteer-led race day.
  91. Greenland Trail 50KSaturday, May 1, 2027Larkspur, ColoradoGreenland Trail 50K runs four laps of smooth doubletrack across a Colorado open space, a fast and runnable spring ultra with Pikes Peak in view all day.
  92. Cocodona 250Sunday, May 2, 2027Black Canyon City, ArizonaCocodona 250 is a multi-day Arizona trail ultra from Black Canyon City to Flagstaff, with 250-plus miles, massive climbing, and live tracking demand.Results
  93. Traverse City Trail Running Festival 100KSaturday, May 8, 2027Traverse City, MichiganThe 100K at Traverse City Trail Running Festival mixes Pere Marquette Forest singletrack and doubletrack from a compact Timber Ridge base near Traverse City.
  94. KEYS100 100 MileSaturday, May 15, 2027Key Largo, FloridaKEYS100 100 Mile runs point to point from Key Largo to Key West, crossing the tropical island chain on exposed roads and bridges beside the ocean.Results
  95. Massanutten Mountain Trails 100Saturday, May 15, 2027Fort Valley, VirginiaMassanutten Mountain Trails 100 is a rocky Shenandoah Valley mountain race with more than 18,000 feet of rugged climbing and a 36-hour cutoff.Results
  96. Highball to Thurmond 50 MileSunday, May 16, 2027Thurmond, West VirginiaA point-to-point 50 miler across New River Gorge National Park that ends in the near-empty rail town of Thurmond, with an Amtrak ride back to the start.
  97. MoMoFo 100KFriday, June 4, 2027Martinsville, IndianaAn evening-start 100K in Indiana's Morgan-Monroe State Forest with 8,500 feet of climbing, mostly singletrack, and a night of June heat and humidity.
  98. Scout Mountain Ultras 100 MileFriday, June 4, 2027Pocatello, IdahoScout Mountain's 102.5-mile Idaho course climbs more than 21,000 feet through rugged forest terrain, unpredictable weather, and a Hardrock qualifier.Results
  99. Rabid Raccoon 100Saturday, June 5, 2027Beaver Falls, PennsylvaniaEight loops through Brady's Run Park make up this western Pennsylvania 100 miler, a June race with 100K, relay, and half marathon options on one course.
  100. Scout Mountain Ultras 50 MileSaturday, June 5, 2027Pocatello, IdahoA midnight start sends Scout Mountain's 54.3-mile field through Idaho mountain trails, more than 10,000 feet of climbing, and likely snow or mud.Results
  101. Scout Mountain Ultras 50KSaturday, June 5, 2027Pocatello, IdahoScout Mountain's 36.2-mile 50K climbs about 7,400 feet above Pocatello, pairing long singletrack stretches with high-country snow and a 16-hour cutoff.Results
  102. Shadow of the Giants 50KSaturday, June 5, 2027Fish Camp, CaliforniaShadow of the Giants sends 50K runners through Sierra National Forest trails, with spaced aid, an eight-hour cutoff and early-start option for late finishers.
  103. Summer Trail Fest Ultra 50 MileSaturday, June 12, 2027Laingsburg, MichiganSmooth, well-marked singletrack and generous cutoffs make this Sleepy Hollow State Park 50-miler approachable for a first long ultra in Michigan.
  104. Tahoe 200Monday, June 21, 2027Homewood, CaliforniaTahoe 200 makes a multi-day circuit around Lake Tahoe, combining more than 200 miles of remote high-altitude trail across California and Nevada.Results
  105. Western States 100Saturday, June 26, 2027Olympic Valley, CaliforniaWestern States 100 is a landmark point-to-point California trail ultra from Olympic Valley to Auburn, with huge climbs, lottery entry, and race-week tracking.Results
  106. Finger Lakes 50s 50 MileSaturday, July 3, 2027Projected dateHector, New YorkFinger Lakes 50s sends its 50-mile field through three forest loops, cow pastures, slippery boardwalks, and roughly 3,900 feet of climbing in Hector.Results
  107. Finger Lakes 50s 50KSaturday, July 3, 2027Projected dateHector, New YorkTwo 16.5-mile loops give the Finger Lakes 50K a muddy, runnable mix of singletrack, cow pastures, dirt roads, and about 2,600 feet of climbing.Results
  108. Hardrock 100Friday, July 9, 2027Silverton, ColoradoHardrock 100 is a 101.8-mile San Juan Mountains loop from Silverton with 33,441 feet of climbing, high passes, and a remote alpine finish at the rock.Results
  109. Black Wolf Backyard UltraSaturday, July 10, 2027Palmer, AlaskaBackyard ultraA 4.167-mile Alaska trail yard climbs about 500 feet through Hatcher Pass singletrack, with creek crossings, midnight light and changing mountain weather.Results
  110. Yellowstone Park 50KSaturday, July 10, 2027West Yellowstone, MontanaYellowstone Park's 50K rolls across Rendezvous ski trails and gravel near West Yellowstone, with wildlife country and an eight-hour window at altitude.
  111. Cascade Crest 100Friday, July 16, 2027Easton, WashingtonCascade Crest 100 combines Pacific Crest Trail miles, a long railroad tunnel and about 23,000 feet of gain in Washington's Cascades each summer.Results
  112. High Lonesome 100Friday, July 16, 2027Nathrop, ColoradoHigh Lonesome 100 loops through Colorado’s Sawatch Range with five alpine passes, 23,300 feet of climbing, and a 37-hour cutoff at high altitude.Results
  113. Bob Marshall 50KSaturday, July 17, 2027Seeley Lake, MontanaThe Bob Marshall 50K blends Seeley Creek ski trails, rugged singletrack and Forest Service roads beside Montana's Bob Marshall Wilderness near Seeley Lake.
  114. Badwater 135Monday, July 19, 2027Lone Pine, CaliforniaBadwater 135 crosses Death Valley to Mt. Whitney, asking runners to cover 135 road miles, extreme heat, and three major climbs from start to finish.Results
  115. Oregon Cascades 100Saturday, July 24, 2027Bend, OregonOregon Cascades 100 links high-desert terrain and Cascade forest on a point-to-point 100-mile trail journey finishing near Bend in Central Oregon.Results
  116. Never Summer 100KSaturday, July 31, 2027Gould, ColoradoNever Summer 100K spends 65.7 miles high in Colorado's State Forest State Park, with 14,500 feet of gain, alpine peaks and a strict 24-hour limit.Results
  117. Bob's Big Timber Backyard UltraSaturday, August 7, 2027Glenmont, OhioBackyard ultraBob's Big Timber is a true Ohio farm backyard, pairing old-growth trail yards with generous race-camp access and a history of deep performances.Results
  118. Sheep Mountain 50 MileSaturday, August 7, 2027Fairplay, ColoradoThe Sheep Mountain 50 Mile averages over 10,600 feet above Fairplay, Colorado, mixing technical trail with remote forest roads high over South Park.Results
  119. Waldo 100KSaturday, August 7, 2027Oakridge, OregonWaldo 100K is a remote Oregon mountain loop over Fuji, the Twins and Maiden Peak, combining high-country singletrack with a 20-hour limit each summer.Results
  120. Bigfoot 200Friday, August 13, 2027Cougar, WashingtonBigfoot 200 is a 207.9-mile point-to-point expedition around Mount St. Helens with huge climbing, remote aid and multi-day logistics in the Cascades.Results
  121. Eastern States 100Saturday, August 14, 2027Waterville, PennsylvaniaEastern States 100 is a remote 103-mile Pennsylvania Wilds loop with more than 20,000 feet of climbing and a qualification requirement each August.Results
  122. Green Lakes Endurance Runs 100KSaturday, August 28, 2027Projected dateFayetteville, New YorkGreen Lakes' runnable 100K circles an eight-mile New York trail loop eight times, mixing shaded lakeshore, steep forest climbs, and exposed meadow miles.Results
  123. Barkley Fall Classic 50KLatest tracked: Saturday, September 19, 2026Wartburg, TennesseeThe 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.Results
  124. IMTUF 100Latest tracked: Saturday, September 19, 2026McCall, IdahoIMTUF 100 is a rugged mountain hundred around McCall, combining remote Idaho singletrack, sustained climbing and a deeply established ultra community.Results
  125. Mountain Lakes 100Latest tracked: Saturday, September 19, 2026Olallie Lake, OregonMountain Lakes 100 circles remote Oregon lakes and Cascade forest on a mountain course known for runnable trail and sustained nighttime miles.Results
  126. Paris Texas Marathon 100KLatest tracked: Saturday, September 19, 2026Paris, TexasA 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.
  127. Pilot Mountain to Hanging Rock UltraLatest tracked: Saturday, September 19, 2026Danbury, North CarolinaA 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.Results
  128. Grindstone by UTMB 100MLatest tracked: Friday, September 18, 2026Swoope, VirginiaGrindstone by UTMB 100M tackles 104 miles and nearly 21,000 feet of climbing through Virginia's technical Allegheny Mountains each September.Results
  129. Run Rabbit Run 100 MileLatest tracked: Friday, September 18, 2026Steamboat Springs, ColoradoRun Rabbit Run 100 combines a tough high-country loop around Steamboat Springs with separate Hare and Tortoise starts and a six-figure prize purse.Results
  130. The Rut 50KLatest tracked: Sunday, September 13, 2026Big Sky, MontanaThe Rut 50K climbs technical mountain terrain around Big Sky and Lone Peak, combining exposed scrambling, steep grades and a capped field each September.Results
  131. Germantown 50KLatest tracked: Saturday, September 12, 2026Germantown, OhioA southwest Ohio trail 50K in its fourth decade, run as four loops of Germantown MetroPark through cedar forest, prairie, and Twin Creek hills.Results
  132. Mogollon Monster 100Latest tracked: Saturday, September 12, 2026Pine, ArizonaMogollon 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.Results
  133. Pine Creek Challenge 100 MileLatest tracked: Saturday, September 12, 2026Wellsboro, PennsylvaniaPine Creek Challenge 100 Mile runs four passages through Pennsylvania's Pine Creek Gorge on a scenic, nontechnical and highly runnable rail-trail course.Results
  134. Youngstown Ultra Trail ClassicLatest tracked: Saturday, September 12, 2026Youngstown, OhioThe Youngstown Ultra Trail Classic has looped Mill Creek Park for about two decades, running a 50K on singletrack past gorges, lakes, and waterfalls.Results
  135. Superior 100 MileLatest tracked: Friday, September 11, 2026Lutsen, MinnesotaSuperior 100 Mile follows the rugged Superior Hiking Trail from Gooseberry State Park to Lutsen across northeast Minnesota's North Shore in September.Results
  136. Wasatch Front 100Latest tracked: Friday, September 11, 2026Kaysville, UtahWasatch 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.Results
  138. Green Lakes Endurance Runs 50KLatest tracked: Saturday, August 22, 2026Fayetteville, New YorkFour eight-mile loops make Green Lakes a runnable trail 50K, mixing shaded lakeshore paths, short forest climbs, and exposed summer meadows.Results
  139. Habanero Hundred 100 MileLatest tracked: Saturday, August 22, 2026Cat Spring, TexasHabanero Hundred 100 Mile starts at noon in intense August heat, challenging runners to complete sixteen sandy 10K trail loops at 7IL Ranch.Results
  140. Leadville Trail 100 RunLatest tracked: Saturday, August 22, 2026Leadville, ColoradoLeadville Trail 100 Run is a high-altitude Colorado out-and-back from Leadville, crossing Hope Pass and topping out near 12,500 feet in thin air.Results
  141. Twisted Branch Trail Run 100KLatest tracked: Saturday, August 22, 2026Naples, New YorkTwisted Branch covers roughly 102 kilometers point to point across New York's Finger Lakes, linking remote trails from Naples to Hammondsport.Results
  142. Anchorage RunFest 49K UltraLatest tracked: Sunday, August 16, 2026Anchorage, AlaskaAnchorage RunFest's 49K climbs five significant hills on a certified city-and-greenbelt route capped at 150 runners for its Alaska field each August.Results
  143. Another Dam 50kLatest tracked: Sunday, August 16, 2026Englewood, OhioFour flat loops through Englewood MetroPark near Dayton make Another Dam 50k one of Ohio's fastest club ultras and a popular first 50k pick.Results
  144. Extraterrestrial Full Moon 51KLatest tracked: Sunday, August 2, 2026Rachel, NevadaThis midnight 51K follows Nevada's Extraterrestrial Highway near Area 51, combining high-desert elevation, darkness and a full-moon atmosphere.Results
  145. Lean Horse 100 MileLatest tracked: Friday, July 31, 2026Custer, South DakotaLean Horse 100 Mile follows the George S. Mickelson Trail through South Dakota's Black Hills on a runnable crushed-limestone rail-trail route.Results
  146. Burning River 100 MileLatest tracked: Saturday, July 25, 2026Cuyahoga Falls, OhioBurning River 100 Mile crosses northeast Ohio parks and trails on an out-and-back endurance course with roughly 8,000 feet of climbing in midsummer.Results
  147. Speedgoat 50KLatest tracked: Saturday, July 25, 2026Snowbird, UtahSpeedgoat 50K climbs 11,318 feet around Snowbird, linking steep ski-area trails, 11,000-foot summits, rocky descents, and a hard 13-hour cutoff.Results
  148. Ode to Laz Backyard UltraStarted: Saturday, July 18, 2026Holly, MichiganBackyard ultraA demanding Michigan backyard ultra that shifts from technical lakeside woodland yards to a rolling park-road loop after dark and a compact crew base.Results
  149. Dawg Gone Long Run 50 MileLatest tracked: Saturday, July 11, 2026Waynesville, OhioDawg Gone Long gives 50-mile runners a generous 14.5-hour cutoff on hot summer trails, with cupless aid and mandatory carried hydration all day.Results
  150. Last Stand 1776 Backyard UltraStarted: Saturday, June 13, 2026Midlothian, VirginiaBackyard ultraLast Stand 1776 follows the backyard format: a 4.18-mile loop every hour until one runner remains, with proceeds supporting military families.Results
  151. BPN Go One More UltraStarted: Friday, April 10, 2026Liberty Hill, TexasBackyard ultraBPN's broadcast-driven backyard ultra repeats a 4.167-mile ranch loop every hour, drawing a selected field to a demanding last-runner-standing test.Results