US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

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1,362 races

The Battle at Bristol Mountain

50K
July 29, 2016 Race day in 1 day
USA / Mid-Atlantic / New York / Canandaigua
Ultramarathon - 50 kilometers
Trail

Cascade Lakes Relay & CLR24

July 29, 2016 Race day in 1 day
USA / Pacific / Oregon / Bend
Ultramarathon - 132 miles
Relay

Cascade Lakes Relay

July 29, 2016 Race day in 1 day
USA / Pacific / Oregon / Bend
Ultramarathon - 132 miles
Relay

Hot, Hilly, Hairy 50K Race

50K
July 30, 2016 Race day in 2 days
USA / East North Central / Wisconsin / UW-Parkside National Cross Country Course Kenosha
Ultramarathon - 50 kilometers
Hilly Trail

I Ran Marathons Majestic August

50K
July 30, 2016 Race day in 2 days
USA / West South Central / Texas / San Antonio
Ultramarathon - 50 kilometers

Pike Peak Ultra

50 Mile
July 30, 2016 Race day in 2 days
USA / Mountain Region / Colorado / Colorado Springs
Ultramarathon - 50 miles
Trail Mountain

Grand Mesa 100

Grand Mesa 100M
July 30, 2016 Race day in 2 days
USA / Mountain Region / Colorado / Grand Mesa
Ultramarathon - 100 miles
Hilly Trail

Grand Mesa 100

Grand Mesa 37.5M
July 30, 2016 Race day in 2 days
USA / Mountain Region / Colorado / Grand Mesa
Ultramarathon - 60 kilometers
Trail

Grand Mesa 100

Grand Mesa 50M
July 30, 2016 Race day in 2 days
USA / Mountain Region / Colorado / Grand Mesa
Ultramarathon - 50 miles
Trail

Harding Hustle

Harding Hustle 50K
July 30, 2016 Race day in 2 days
USA / Pacific / California / Modjeska Canyon
Ultramarathon - 50 kilometers
Trail Mountain

Kanawha Trace 50K/25K/10K Trail Run

Kanawha Trace 50K
July 30, 2016 Race day in 2 days
USA / South Atlantic / West Virginia / Ona
Ultramarathon - 50 kilometers
Trail

Minnesota Voyageur Trail 50 Mile Run

July 30, 2016 Race day in 2 days
USA / West North Central / Minnesota / Duluth
Ultramarathon - 50 miles
Trail

White River 50 Mile Trail Run

July 30, 2016 Race day in 2 days
USA / Pacific / Washington / Cristal Mountain
Ultramarathon - 50 miles
Trail

San Francisco Marathon

San Francisco Ultramarathon
July 31, 2016 Race day in 3 days
USA / Pacific / California / San Francisco
Ultramarathon - 52.400 miles
Road Running

Ouray 100 Mile Endurance Run

August 05, 2016 Race day in 8 days
USA / Mountain Region / Colorado / Ouray
Ultramarathon - 100 miles
Trail Mountain Ever Run Racing