US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

Refine by

1,371 races

DoubleTop 100

100k
April 22, 2017 Race day in about 2 months
USA / South Atlantic / Georgia / Ft Mountain State Park
Ultramarathon - 100 kilometers
Hilly Fun Trail Fast

Pistol Ultra Run

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

Trail Runner Ultra Race of Champions 100K

100K
May 13, 2017 Race day in 3 months
USA / South Atlantic / Virginia / Raphine
Ultramarathon - 100 kilometers
Trail Mountain

J&J Race and Trail Running Reunion

100K
September 30, 2017 Race day in 7 months
USA / West South Central / Texas / Rocksprings
Ultramarathon - 100 kilometers
Tejas Trails

Ultra Adventure Tushars

100K
July 30, 2017 Race day in 5 months
USA / Mountain Region / Utah / Eagle Point Ski Resort
Ultramarathon - 100 kilometers
Trail

Sun Mountain

100K
May 20, 2017 Race day in 3 months
USA / Pacific / Washington / Winthrop
Ultramarathon - 100 kilometers
Trail Rainshadow Running

Lovers Leap of Faith

100K
July 01, 2017 Race day in 4 months
USA / Pacific / California / Strawberry
Ultramarathon - 100 kilometers

Crazy Desert Trail Race

100k
March 11, 2017 Race day in 13 days
USA / West South Central / Texas / Park Drive
Ultramarathon - 100 kilometers

Pumpkin Holler Hunnerd

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

Plain 100 Mile Endurance Run

100K
September 16, 2017 Race day in 7 months
USA / Pacific / Washington / Plain
Ultramarathon - 100 kilometers
Trail

Tinajas Ultras

100K
March 04, 2017 Race day in 6 days
USA / West South Central / Texas / Bend
Ultramarathon - 100 kilometers
Tejas Trails Trail

Worlds End Ultramarathon

100K
June 03, 2017 Race day in 3 months
USA / Mid-Atlantic / Pennsylvania / Forksville
Ultramarathon - 100 kilometers
Trail Mountain

Mo' Bell

100K
August 05, 2017 Race day in 5 months
USA / East South Central / Tennessee / Burns
Ultramarathon - 100 kilometers

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

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