US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

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1,376 races

Pumpkin Holler Hunnerd

100K
October 15, 2016 The race has already taken place.
USA / West South Central / Oklahoma / Tahlequah
Ultramarathon - 100 kilometers
Trail

Pistol Ultra Run

100K
December 31, 2016 The race has already taken place.
USA / East South Central / Tennessee / Alcoa
Ultramarathon - 100 kilometers

Ultra Adventure Tushars

100K
July 30, 2017 Race day in 4 months
USA / Mountain Region / Utah / Eagle Point Ski Resort
Ultramarathon - 100 kilometers
Trail

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

Tinajas Ultras

100K
March 04, 2017 The race has already taken place.
USA / West South Central / Texas / Bend
Ultramarathon - 100 kilometers
Tejas Trails Trail

Sun Mountain

100K
May 20, 2017 Race day in about 2 months
USA / Pacific / Washington / Winthrop
Ultramarathon - 100 kilometers
Trail Rainshadow Running

Lovers Leap of Faith

100K
July 01, 2017 Race day in 3 months
USA / Pacific / California / Strawberry
Ultramarathon - 100 kilometers

Angel Fire Endurance Run

100K
June 17, 2017 Race day in 3 months
USA / Mountain Region / New Mexico / Angel Fire
Ultramarathon - 100 kilometers
Trail Mountain

Plain 100 Mile Endurance Run

100K
September 16, 2017 Race day in 6 months
USA / Pacific / Washington / Plain
Ultramarathon - 100 kilometers
Trail

Wildcat Ridge Romp

100k
August 12, 2017 Race day in 5 months
USA / Mid-Atlantic / New Jersey / Rockaway Township
Ultramarathon - 100 kilometers
NJ Trail Series

J&J Race and Trail Running Reunion

100K
September 30, 2017 Race day in 6 months
USA / West South Central / Texas / Rocksprings
Ultramarathon - 100 kilometers
Tejas Trails

Mo' Bell

100K
August 05, 2017 Race day in 4 months
USA / East South Central / Tennessee / Burns
Ultramarathon - 100 kilometers

Worlds End Ultramarathon

100K
June 03, 2017 Race day in 2 months
USA / Mid-Atlantic / Pennsylvania / Forksville
Ultramarathon - 100 kilometers
Trail Mountain

Trail Runner Ultra Race of Champions 100K

100K
May 13, 2017 Race day in about 2 months
USA / South Atlantic / Virginia / Raphine
Ultramarathon - 100 kilometers
Trail Mountain

Blazing 7's Trail Run

100k
October 01, 2016 The race has already taken place.
USA / West South Central / Texas / Cat Spring
Ultramarathon - 100 kilometers
Trail