Ultramarathons

100 mile races

100 milers, plus races a little shorter or longer, from about 93 to 115 miles. Each race shows its own official distance. 70 races. Next up: Dinosaur Valley 100 Mile on Saturday, November 21, 2026.

November 2026

Dinosaur Valley 100 Mile

Glen Rose, Texas100 mileWaitlist open

Colorado River Run 100 Mile

Cedar Creek, Texas100 mileEntry open

KosciMiler by UTMB

Jindabyne, Australia100 mileSold out

December 2026

Brazos Bend 100 Mile

Needville, Texas100 mileWaitlist open

Crooked Creek Ultra 100 Mile

Shepherdsville, Kentucky100 mileEntry open

Oman by UTMB Hajar Ultra

Al Hamra, Oman154KEntry closed

Daytona 100

Jacksonville Beach, Florida100 mileEntry open

Desert Solstice 100 Mile

Phoenix, Arizona100 mileEntry open

Across the Years 100 Mile

Peoria, Arizona100 mileEntry open

January 2027

HURT 100

Honolulu, Hawaii100 mileEntry closed

Arc of Attrition by UTMB Arc 100M

Perranporth, United Kingdom100 mileEntry open

February 2027

Rocky Raccoon 100

Huntsville, Texas100 mileWaitlist open

Lake Vian Hilltop Run 100 Mile

Vian, Oklahoma100 mileEntry open

March 2027

Blackbeard's Revenge 100

Corolla, North Carolina100 mileEntry open

Addo Elephant Trail Run 100 Mile

Addo, South Africa100 mileEntry open

April 2027

Umstead 100

Raleigh, North Carolina100 mileSold out

Zion 100 Mile

Apple Valley, Utah100 mileEntry open

Canyons 100M

Auburn, California100 mileEntry open

Mt. FUJI 100

Fujiyoshida, Japan100 mileEntry open

May 2027

Thames Path 100

Richmond, United Kingdom100 mileEntry open

KEYS100 100 Mile

Key Largo, Florida100 mileEntry open

June 2027

Scout Mountain Ultras 100 Mile

Pocatello, Idaho100 mile

Rabid Raccoon 100

Beaver Falls, Pennsylvania100 mileEntry open

South Downs Way 100

Winchester, United Kingdom100 mileEntry open

Western States 100

Olympic Valley, California100 mileLottery open

July 2027

Hardrock 100

Silverton, Colorado100 mileEntry closed

Cascade Crest 100

Easton, Washington100 mile

High Lonesome 100

Nathrop, Colorado100 mile

Oregon Cascades 100

Bend, Oregon100 mile

Lean Horse 100 Mile

Custer, South Dakota100 mileEntry open

Burning River 100 Mile

Cuyahoga Falls, Ohio100 mileEntry open

August 2027

KAT100 100 Miles

Fieberbrunn, Austria100 mileEntry open

Eastern States 100

Waterville, Pennsylvania100 mileEntry open

Leadville Trail 100 Run

Leadville, Colorado100 mileLimited entry

September 2027

Wasatch Front 100

Kaysville, Utah100 mile

Mogollon Monster 100

Pine, Arizona100 mile

Run Rabbit Run 100 Mile

Steamboat Springs, Colorado100 mile

Mountain Lakes 100

Olallie Lake, Oregon100 mile

Bear 100 Mile

Logan, Utah100 mile

Grindstone by UTMB 100M

Swoope, Virginia100 mileEntry open

Karkloof 100 Miler

Karkloof, South Africa100 mileEntry open

Yeti 100 Mile Endurance Run

Damascus, Virginia100 mile

October 2027

Angeles Crest 100 Mile Endurance Run

Altadena, California100 mileWaitlist open

Hennepin Hundred 100 Mile

Sterling, Illinois100 mile

Centurion Autumn 100

Goring-on-Thames, United Kingdom100 mile2026 results

November 2027

Kullamannen by UTMB Ultra 100 Miles

Höganäs, Sweden100 mile2026 results

Date not announced

El Taco Loco 100 Mile

San Antonio, Texas100 mile

Tunnel Hill 100 Mile

Vienna, Illinois100 mile2026 results

Pinhoti 100

Sylacauga, Alabama100 mile2026 results

Rio Del Lago 100 Mile

Folsom, California100 mile2026 results

Javelina Jundred

Fountain Hills, Arizona100 mile2026 results

Ozark Trail 100 Mile Endurance Run

Steelville, Missouri100 mile

Himalayan 100 Mile Stage Race

Maneybhanjang, India100 mile2026 results

No Business 100

Jamestown, Tennessee100 mile2026 results

Ultra-Trail Mount Yun UMY 100M

Xiangning, China100 mile2026 results

Diagonale des Fous

Saint-Pierre, France180K

Oil Creek 100 Mile

Titusville, Pennsylvania100 mile

UTACCH Quya Ultra Trail 100 Mile

Villa Yacanto, Argentina100 mile

Wolverine State 100

Petoskey, Michigan100 mile

HOKA Kodiak Ultra Marathons by UTMB 100M

Big Bear Lake, California100 mile

Organize a race, or spot a mistake? Tell us and we’ll fix it.

Newsletter

Get the briefing

Big lottery openings, new race dates and what runners need to know, now and then.