US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

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1,390 races

Long Haul 100

100K
January 14, 2017 The race has already taken place.
USA / South Atlantic / Florida / Wesley Chapel
Ultramarathon - 100 kilometers
Charity Team Trail

Canyons 50K Trail Run

100K
April 29, 2017 Race day in 3 months
USA / Pacific / California / Foresthill
Ultramarathon - 100 kilometers
Trail Western States Qualifier Mountain

Tinajas Ultras

100K
March 04, 2017 Race day in about 2 months
USA / West South Central / Texas / Bend
Ultramarathon - 100 kilometers
Tejas Trails Trail

Black Canyon Ultras

100K
February 18, 2017 Race day in about 1 month
USA / Mountain Region / Arizona / Spring Valley
Ultramarathon - 100 kilometers
Trail Aravaipa Running Western States Qualifier

C.U.R.E Ultra's

100K
April 29, 2017 Race day in 3 months
USA / Mountain Region / Colorado / Chatfield State Park, Littleton
Ultramarathon - 100 kilometers
Trail

Sun Mountain

100K
May 20, 2017 Race day in 4 months
USA / Pacific / Washington / Winthrop
Ultramarathon - 100 kilometers
Trail Rainshadow Running

Crazy Desert Trail Race

100k
March 11, 2017 Race day in about 2 months
USA / West South Central / Texas / Park Drive
Ultramarathon - 100 kilometers

Mo' Bell

100K
August 05, 2017 Race day in 7 months
USA / East South Central / Tennessee / Burns
Ultramarathon - 100 kilometers

Lovers Leap of Faith

100K
July 01, 2017 Race day in 5 months
USA / Pacific / California / Strawberry
Ultramarathon - 100 kilometers

Lone Star 100

100K
February 11, 2017 Race day in 24 days
USA / West South Central / Texas / Tom Mays Unit Trail
Ultramarathon - 100 kilometers

Zion Ultras

100k
April 07, 2017 Race day in 3 months
USA / Mountain Region / Utah / Springdale
Ultramarathon - 100 kilometers
Hilly Desert Trail Ultra Adventures

Plain 100 Mile Endurance Run

100K
September 16, 2017 Race day in 8 months
USA / Pacific / Washington / Plain
Ultramarathon - 100 kilometers
Trail

Worlds End Ultramarathon

100K
June 03, 2017 Race day in 5 months
USA / Mid-Atlantic / Pennsylvania / Forksville
Ultramarathon - 100 kilometers
Trail Mountain

100 Not Yo Momma's

100K
September 24, 2016 The race has already taken place.
USA / East North Central / Ohio / Great Seal State Park, Chillicothe
Ultramarathon - 100 kilometers

J&J Race and Trail Running Reunion

100K
September 30, 2017 Race day in 9 months
USA / West South Central / Texas / Rocksprings
Ultramarathon - 100 kilometers
Tejas Trails