US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

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1,376 races

NJ Ultra Festival

100K Trail Race
April 01, 2017 Race day in 4 days
USA / Mid-Atlantic / New Jersey / NJ State Fairgrounds, Augusta
Ultramarathon - 100 kilometers
NJ Trail Series Trail

NJ Ultra Festival

100M Trail Race
April 01, 2017 Race day in 4 days
USA / Mid-Atlantic / New Jersey / NJ State Fairgrounds, Augusta
Ultramarathon - 100 miles
NJ Trail Series Trail

Montaña de Oro

50km
April 01, 2017 Race day in 4 days
USA / Pacific / California / Los Osos
Ultramarathon - 50 kilometers
Trail Pacific Trail Runs

NJ Ultra Festival

50K Trail Race
April 01, 2017 Race day in 4 days
USA / Mid-Atlantic / New Jersey / NJ State Fairgrounds, Augusta
Ultramarathon - 50 kilometers
NJ Trail Series Trail

NJ Ultra Festival

50M Trail Race
April 01, 2017 Race day in 4 days
USA / Mid-Atlantic / New Jersey / NJ State Fairgrounds, Augusta
Ultramarathon - 50 miles
NJ Trail Series Trail

American River 50-mile Endurance Run

April 01, 2017 Race day in 4 days
USA / Pacific / California / Sacramento
Ultramarathon - 50 miles
Trail

Crown King Scramble 50 Km Trail Run

April 01, 2017 Race day in 4 days
USA / Mountain Region / Arizona / Lake Pleasant Regional Park
Ultramarathon - 50 kilometers
Trail Aravaipa Running

Fools 50K & 25K Trail Run

Fools 50K Trail Run
April 01, 2017 Race day in 4 days
USA / East North Central / Ohio / Cuyahoga Valley National Park, Peninsula
Ultramarathon - 50 kilometers
Trail Western Reserve Racing

Georgia Death Race

April 01, 2017 Race day in 4 days
USA / South Atlantic / Georgia / Vogel State Park
Ultramarathon - 60 miles
Hilly Trail Run Bum Tours Western States Qualifier

Hells Hills

Hells Hills 50 km Endurance Trail Run
April 01, 2017 Race day in 4 days
USA / West South Central / Texas / Smithville
Ultramarathon - 50 kilometers
Tejas Trails Trail

Hells Hills

Hells Hills 50 Mile Endurance Trail Run
April 01, 2017 Race day in 4 days
USA / West South Central / Texas / Smithville
Ultramarathon - 50 miles
Tejas Trails Trail

Old Goats 50 Mile Trail Race

Old Goats 50K Trail Race
April 01, 2017 Race day in 4 days
USA / Pacific / California / Cleveland National Forest
Ultramarathon - 50 kilometers
Trail Old Goat Trail Races

Old Goats 50 Mile Trail Race

Old Goats 50 Mile Trail Race
April 01, 2017 Race day in 4 days
USA / Pacific / California / Cleveland National Forest
Ultramarathon - 50 miles
Trail Old Goat Trail Races

Rockin K Trail Runs

Rocking K Trail 50 Mile Run
April 01, 2017 Race day in 4 days
USA / West North Central / Kansas / Kanopolis State Park, Marquette
Ultramarathon - 50 miles
Trail Kansas Ultrarunner's Society (KUS)

Shotgun Trail Blast

Shotgun Trail Blast 50K
April 01, 2017 Race day in 4 days
USA / Pacific / Oregon / Marcola
Ultramarathon - 50 kilometers
Trail Eclectic Edge Racing