US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

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1,376 races

Sundance Trail Run

Sundance 50K Trail Run
September 10, 2016 The race has already taken place.
USA / Mountain Region / Wyoming / Sundance
Ultramarathon - 50 kilometers
Trail Black Hills Runners Club Trail Running Series

Bighorn Mountain Wild and Scenic Trail Runs

Bighorn Trail 50K Endurance Run
June 16, 2017 Race day in 3 months
USA / Mountain Region / Wyoming / Sheridan
Ultramarathon - 50 kilometers
Trail

Bighorn Mountain Wild and Scenic Trail Runs

Bighorn Trail 100 Mile Endurance Run
June 16, 2017 Race day in 3 months
USA / Mountain Region / Wyoming / Sheridan
Ultramarathon - 100 miles
UTMB Qualifier Trail Western States Qualifier

Bighorn Mountain Wild and Scenic Trail Runs

Bighorn Trail 50 Mile Endurance Run
June 16, 2017 Race day in 3 months
USA / Mountain Region / Wyoming / Sheridan
Ultramarathon - 50 miles
Trail

Wyoming Marathon Races

Rocky Mountain 50k
May 29, 2016 The race has already taken place.
USA / Mountain Region / Wyoming / Laramie
Ultramarathon - 50 kilometers
Charity Road Running

El Vaquero Loco

El Vaquero Loco 50K
August 06, 2016 The race has already taken place.
USA / Mountain Region / Wyoming / Afton
Ultramarathon - 50 kilometers
Trail Mountain

Hot, Hilly, Hairy 50K Race

50K
July 29, 2017 Race day in 4 months
USA / East North Central / Wisconsin / UW-Parkside National Cross Country Course Kenosha
Ultramarathon - 50 kilometers
Hilly Trail

Ahnapee Summer Solstice 50 Mile Run

50K Relay Run
June 24, 2017 Race day in 3 months
USA / East North Central / Wisconsin / Sturgeon Bay
Ultramarathon - 50 kilometers
Relay

Ahnapee Summer Solstice 50 Mile Run

50K Solo Run
June 24, 2017 Race day in 3 months
USA / East North Central / Wisconsin / Sturgeon Bay
Ultramarathon - 50 kilometers

Ahnapee Summer Solstice 50 Mile Run

50 Mile Relay Run
June 24, 2017 Race day in 3 months
USA / East North Central / Wisconsin / Sturgeon Bay
Ultramarathon - 50 miles
Relay

Ahnapee Summer Solstice 50 Mile Run

50 Mile Solo Run
June 24, 2017 Race day in 3 months
USA / East North Central / Wisconsin / Sturgeon Bay
Ultramarathon - 50 miles

Icebox 480

November 05, 2016 The race has already taken place.
USA / East North Central / Wisconsin / River Falls
Ultramarathon - 8 hours
Trail

Tuscobia Winter Ultramarathon

Tuscobia Winter Ultramarathon 75 Mile Run
January 07, 2017 The race has already taken place.
USA / East North Central / Wisconsin / Park Falls
Ultramarathon - 75 miles
Trail Snow

Tuscobia Winter Ultramarathon

Tuscobia Winter Ultramarathon 150 Mile Run
January 06, 2017 The race has already taken place.
USA / East North Central / Wisconsin / Park Falls
Ultramarathon - 150 miles
Trail Iditarod Trail Invitational Qualifier Snow

John Dick Memorial 50K

February 04, 2017 The race has already taken place.
USA / East North Central / Wisconsin / North Prairie
Ultramarathon - 50 kilometers
Trail Badgerland Striders