US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

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1,361 races

Frisco Railroad Run

Frisco Railroad Run 50k Ultramarathon
April 29, 2017 Race day in 1 day
USA / West North Central / Missouri / Willard
Ultramarathon - 50 kilometers
Trail Relay

Frisco Railroad Run

Frisco Railroad Run 50 Mile Ultramarathon
April 29, 2017 Race day in 1 day
USA / West North Central / Missouri / Willard
Ultramarathon - 50 miles
Trail Relay

Heartland 50 Mile Spring Race

April 29, 2017 Race day in 1 day
USA / West North Central / Kansas / Cassoday
Ultramarathon - 50 miles

Indiana Trail 100

Indiana Trail 100
April 29, 2017 Race day in 1 day
USA / East North Central / Indiana / Chain O' Lakes State Park, Albion
Ultramarathon - 100 miles
UTMB Qualifier Charity Trail Western States Qualifier

Indiana Trail 100

Indiana Trail 50
April 29, 2017 Race day in 1 day
USA / East North Central / Indiana / Chain O' Lakes State Park, Albion
Ultramarathon - 50 miles
Charity Trail

Lost Boys 50 Mile Trail Run

April 29, 2017 Race day in 1 day
USA / Pacific / California / Anza Borrego Desert State Park
Ultramarathon - 50 miles
Trail Mountain

Promise Land 50K

April 29, 2017 Race day in 1 day
USA / South Atlantic / Virginia / Bedford
Ultramarathon - 50 kilometers
Trail Eco-x Sports

American Odyssey Relay

April 29, 2017 Race day in 1 day
USA / South Atlantic / Washington D.C. / Washington
Ultramarathon - 150 miles

Rodeo Beach Rumble 8K/Half/30K/50K

Rodeo Beach Rumble 50K
April 29, 2017 Race day in 1 day
USA / Pacific / California / Rodeo Beach, Golden Gate National Recreation Area, Sausalito
Ultramarathon - 50 kilometers
Trail Urban Coyote Racing

Sinister Night Trail Runs

Sinister Night 54K Trail Run
April 29, 2017 Race day in 1 day
USA / Mountain Region / Arizona / San Tan Mountain Regional Park, Queen Creek, AZ
Ultramarathon - 54 kilometers
Trail Aravaipa Running Night

SweetH20 50K

April 29, 2017 Race day in 1 day
USA / South Atlantic / Georgia / Sweetwater Creek State Park, Lithia Springs
Ultramarathon - 50 kilometers
Trail Douglas County Rogue Runners

Sybil Ludington 50K Run

April 29, 2017 Race day in 1 day
USA / Mid-Atlantic / New York / Carmel
Ultramarathon - 50 kilometers
Hilly Relay

XTERRA Spring Eagle

XTERRA Spring Eagle 50K
April 29, 2017 Race day in 1 day
USA / Pacific / Washington / Soaring Eagle Regional Park
Ultramarathon - 50 kilometers
Northwest Trail Runs Hilly Trail

Jack Bristol Lake Waramaug

Jack Bristol Lake Waramaug 100k
April 30, 2017 Race day in 2 days
USA / New England / Connecticut / New Preston
Ultramarathon - 100 kilometers

Jack Bristol Lake Waramaug

Jack Bristol Lake Waramaug 50k
April 30, 2017 Race day in 2 days
USA / New England / Connecticut / New Preston
Ultramarathon - 50 kilometers