US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

Refine by

1,370 races

Reebok Ragnar Michigan

September 30, 2016 Race day in 1 day
USA / East North Central / Michigan / Muskegon
Ultramarathon - 200 miles
Relay

Blazing 7's Trail Run

100k
October 01, 2016 Race day in 2 days
USA / West South Central / Texas / Cat Spring
Ultramarathon - 100 kilometers
Trail

Blazing 7s

100k
October 01, 2016 Race day in 2 days
USA / West South Central / Texas / Cat Spring
Ultramarathon - 62.400 miles

Blazing 7s

100k relay
October 01, 2016 Race day in 2 days
USA / West South Central / Texas / Cat Spring
Ultramarathon - 62.400 miles

Blazing 7's Trail Run

100M
October 01, 2016 Race day in 2 days
USA / West South Central / Texas / Cat Spring
Ultramarathon - 100 miles
Trail

Blazing 7s

100 miler
October 01, 2016 Race day in 2 days
USA / West South Central / Texas / Cat Spring
Ultramarathon - 100 miles

Blazing 7s

100m relay
October 01, 2016 Race day in 2 days
USA / West South Central / Texas / Cat Spring
Ultramarathon - 100 miles

Blazing 7's Trail Run

25k
October 01, 2016 Race day in 2 days
USA / West South Central / Texas / Cat Spring
Ultramarathon - 25 kilometers
Trail

Blazing 7s

50k
October 01, 2016 Race day in 2 days
USA / West South Central / Texas / Cat Spring
Ultramarathon - 31.300 miles

Blazing 7's Trail Run

50k
October 01, 2016 Race day in 2 days
USA / West South Central / Texas / Cat Spring
Ultramarathon - 50 kilometers
Trail

New River Trail

50K
October 01, 2016 Race day in 2 days
USA / South Atlantic / Virginia / New River Trail State Park
Ultramarathon - 50 kilometers
Flat Green Trail

Rambler 120 Team Challenge

All-Military Relay (5-8 person Team)
October 01, 2016 Race day in 2 days
USA / West South Central / Texas / Canyon Lake
Ultramarathon - 30 miles
Relay

Rambler 120 Team Challenge

All-Military Xtreme (4 person Team)
October 01, 2016 Race day in 2 days
USA / West South Central / Texas / Canyon Lake
Ultramarathon - 30 miles

Arkansas Traveller 100

October 01, 2016 Race day in 2 days
USA / West South Central / Arkansas / Camp Ouachita
Ultramarathon - 100 miles
Trail Western States Qualifier

Cat's Tail Trail Marathon

October 01, 2016 Race day in 2 days
USA / Mid-Atlantic / New York / Shandaken
Ultramarathon - 26.500 miles
Trail Mountain