US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

1,527 races

Sycamore 100k

100K
02/24/2018 - 06:00
North America / USA / Pacific / California / Poway
Ultramarathon
Trail Running Solo

Sycamore 100k

50K
02/24/2018 - 07:00
North America / USA / Pacific / California / Poway
Ultramarathon
Trail Running Solo

Sycamore 100k

100K Relay
02/24/2018 - 06:00
North America / USA / Pacific / California / Poway
Ultramarathon
Trail Running Relay

Tulsa Running Club Post Oak Lodge Challenge

Tulsa Running Club Post Oak Lodge 50K Trail Run
02/24/2018 - 08:00
North America / USA / West South Central / Oklahoma / Tulsa
Ultramarathon
Trail Running

Cowtown Marathon

50K Ultra Marathon presented by Miller Lite
02/25/2018 - 07:00
North America / USA / West South Central / Texas / Fort Worth
Ultramarathon
Road Running

Iditarod Trail Invitational

1000 mile
02/25/2018 - 14:00
North America / USA / Pacific / Alaska / Knik-Fairview
Ultramarathon
Snow UTMB Qualifier Trail Running

Iditarod Trail Invitational

350 mile
02/25/2018 - 14:00
North America / USA / Pacific / Alaska / Knik-Fairview
Ultramarathon
Snow UTMB Qualifier Trail Running

Blood Sweat and Beers Day/Night Trail run

Marathon Moonlight
03/03/2018 - 16:00
North America / USA / Mountain Region / Nevada / Bootleg Canyon
Ultramarathon
Night Race Desert Trail Running Solo

Carl Touchstone Mississippi Trail Runs

50 Mile
03/03/2018
North America / USA / East South Central / Mississippi / De Soto National Forest
Ultramarathon
Trail Running Solo

Carl Touchstone Mississippi Trail Runs

50K
03/03/2018
North America / USA / East South Central / Mississippi / De Soto National Forest
Ultramarathon
Trail Running Solo

Chena River to Ridge Endurance Race

50 Mile
03/03/2018 - 09:00
North America / USA / Pacific / Alaska / Fairbanks
Ultramarathon
Snow Trail Running Solo

Conquer the Rock

Foothils 50K
03/03/2018 - 07:30
North America / USA / South Atlantic / South Carolina / Pickens
Ultramarathon
Running
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