US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

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1,358 races

Trap Pond 50K, Marathon, and Half Marathon

Trap Pond 50K
April 29, 2018 To be confirmed Race day in 11 months
USA / South Atlantic / Delaware / Laurel
Ultramarathon - 50 kilometers
Altis Endurance Sports

Big Turtle 50 Miler and Marathon

50 Miler
April 28, 2018 Race day in 11 months
USA / East South Central / Kentucky / Morehead
Ultramarathon - 50 miles
Trail

Cape Cod Trail Race - Run Forward. Give Back.

Cape Cod Trail Race - Run Forward. Give Back - Ultra
April 08, 2018 Race day in 11 months
USA / New England / Massachusetts / East Falmouth
Ultramarathon - 50 kilometers
Charity Trail

The Grasslands Trail Runs

The Grasslands 50-Mile
March 17, 2018 Race day in 10 months
USA / West South Central / Texas / Lyndon B. Johnson National Grassland
Ultramarathon - 50 miles
Trail

Seneca Creek Greenway Trail Marathon & 50K

Seneca Creek Greenway Trail 50K
March 03, 2018 Race day in 9 months
USA / South Atlantic / Maryland / Damascus
Ultramarathon - 50 kilometers
Interview

Cowtown Marathon

50K Ultra Marathon presented by Miller Lite
February 25, 2018 Race day in 9 months
USA / West South Central / Texas / Fort Worth
Ultramarathon - 50 kilometers
Road Running

Tulsa Running Club Post Oak Lodge Challenge

Tulsa Running Club Post Oak Lodge 50K Trail Run
February 24, 2018 Race day in 9 months
USA / West South Central / Oklahoma / Tulsa
Ultramarathon - 50 kilometers
Trail

Everglades Ultras

Everglades 50K Trail Race
February 17, 2018 Race day in 9 months
USA / South Atlantic / Florida / Fakahatchee Strand Preserve State Park
Ultramarathon - 50 kilometers
Trail

Everglades Ultras

Everglades 50 Mile Trail Race
February 17, 2018 Race day in 9 months
USA / South Atlantic / Florida / Fakahatchee Strand Preserve State Park
Ultramarathon - 50 miles
Trail

26.2 With Donna

110 With Donna Ultra Marathon
February 11, 2018 Race day in 9 months
USA / South Atlantic / Florida / Jacksonville Beach
Ultramarathon - 110 miles
Road Running

Miracle Match Marathon

50K
January 28, 2018 Race day in 8 months
USA / West South Central / Texas / Waco
Ultramarathon - 50 kilometers
Road Running

Skydive Ultra Run

Skydive Ultra 100M Run
January 27, 2018 Race day in 8 months
USA / South Atlantic / Florida / Clewiston
Ultramarathon - 100 miles

Skydive Ultra Run

Skydive Ultra 50 km Run
January 27, 2018 Race day in 8 months
USA / South Atlantic / Florida / Clewiston
Ultramarathon - 50 kilometers

Skydive Ultra Run

Skydive Ultra 50M Run
January 27, 2018 Race day in 8 months
USA / South Atlantic / Florida / Clewiston
Ultramarathon - 50 miles

Oracle Rumble 50M, 50 Mile 2 Person Relay, 50K, Half Marathon and 12K

50 Mile - 2 Person Relay
January 27, 2018 Race day in 8 months
USA / Mountain Region / Arizona / Tucson
Ultramarathon - 50 miles
Trail Relay