US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

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1,390 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 50 Mile Endurance Run
June 17, 2016 The race has already taken place.
USA / Mountain Region / Wyoming / Sheridan
Ultramarathon - 50 miles
Trail

Bighorn Mountain Wild and Scenic Trail Runs

Bighorn Trail 50K Endurance Run
June 17, 2016 The race has already taken place.
USA / Mountain Region / Wyoming / Sheridan
Ultramarathon - 50 kilometers
Trail

Bighorn Mountain Wild and Scenic Trail Runs

Bighorn Trail 100 Mile Endurance Run
June 17, 2016 The race has already taken place.
USA / Mountain Region / Wyoming / Sheridan
Ultramarathon - 100 miles
UTMB Qualifier Trail Western States Qualifier

Wyoming Marathon Races

Rocky Mountain 50k
May 29, 2016 The race has already taken place.
USA / Mountain Region / Wyoming / Laramie
Ultramarathon - 50 kilometers
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 6 months
USA / East North Central / Wisconsin / UW-Parkside National Cross Country Course Kenosha
Ultramarathon - 50 kilometers
Hilly Trail

Ahnapee Summer Solstice 50 Mile Relay Run

June 18, 2016 The race has already taken place.
USA / East North Central / Wisconsin / Sturgeon Bay
Ultramarathon - 50 miles
Team

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 Race day in 17 days
USA / East North Central / Wisconsin / North Prairie
Ultramarathon - 50 kilometers
Trail Badgerland Striders

Mosquito Hill Endurance Runs

50K Run
August 07, 2016 The race has already taken place.
USA / East North Central / Wisconsin / New London
Ultramarathon - 50 kilometers

Chippewa Moraine 'A Run for the AGES'

Chippewa 50K Trail Run
May 27, 2017 Race day in 4 months
USA / East North Central / Wisconsin / New Auburn
Ultramarathon - 50 kilometers
Trail

Lake Michigan Trail Marathon

Lake Michigan Trail 50K
September 03, 2017 Race day in 8 months
USA / East North Central / Wisconsin / Milwaukee County Parks
Ultramarathon - 50 kilometers
Charity Trail