US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

Refine by

1,361 races

Canyons 50K Trail Run

100K
April 29, 2017 Race day in 1 day
USA / Pacific / California / Foresthill
Ultramarathon - 100 kilometers
Trail Western States Qualifier Mountain

C.U.R.E Ultra's

100K
April 29, 2017 Race day in 1 day
USA / Mountain Region / Colorado / Chatfield State Park, Littleton
Ultramarathon - 100 kilometers
Trail

The North Face Endurance Challenge Washington DC

50K
April 29, 2017 Race day in 1 day
USA / South Atlantic / Virginia / Algonkian Regional Park, Sterling
Ultramarathon - 50 kilometers
Trail The North Face Endurance Challenge

Canyons 50K Trail Run

50K
April 29, 2017 Race day in 1 day
USA / Pacific / California / Foresthill
Ultramarathon - 50 kilometers
Trail Mountain

C.U.R.E Ultra's

50K
April 29, 2017 Race day in 1 day
USA / Mountain Region / Colorado / Chatfield State Park, Littleton
Ultramarathon - 50 kilometers
Trail

C.U.R.E Ultra's

50 Mile
April 29, 2017 Race day in 1 day
USA / Mountain Region / Colorado / Chatfield State Park, Littleton
Ultramarathon - 50 miles
Trail

The North Face Endurance Challenge Washington DC

50 Mile
April 29, 2017 Race day in 1 day
USA / South Atlantic / Virginia / Algonkian Regional Park, Sterling
Ultramarathon - 50 miles
Trail The North Face Endurance Challenge

Big Turtle 50 Miler and Marathon

50 Miler
April 29, 2017 Race day in 1 day
USA / East South Central / Kentucky / Morehead
Ultramarathon - 50 miles
Trail

Colonial70 Relay

April 29, 2017 Race day in 1 day
USA / South Atlantic / Virginia / Hanover County
Ultramarathon - 70 miles
Relay

BRRC Gunpowder Keg Ultra Trail Races

BRRC Gunpowder Keg Ultra 50K Trail Race
April 29, 2017 Race day in 1 day
USA / South Atlantic / Maryland / Gunpowder State Park
Ultramarathon - 50 kilometers
Trail

Capitol Peak 50 miler/25k

Capitol Peak 50 miler
April 29, 2017 Race day in 1 day
USA / Pacific / Washington / Olympia
Ultramarathon - 50 miles

C&O Canal 100

April 29, 2017 Race day in 1 day
USA / South Atlantic / Maryland / Camp Manidokan
Ultramarathon - 100 miles

Pandora's BoX of RoX Trail Run

Double Marathon
April 29, 2017 Race day in 1 day
USA / West South Central / Texas / Reveille Peak Ranch, Texas
Ultramarathon - 52.200 miles
Tejas Trails Trail

FlatRock 101K Ultra Trail Race

April 29, 2017 Race day in 1 day
USA / West North Central / Kansas / Independence
Ultramarathon - 101 kilometers

Folsom Lake Trail Run

Folsom Lake Trail 50K Run
April 29, 2017 Race day in 1 day
USA / Pacific / California / Folsom Point
Ultramarathon - 50 kilometers
Trail Inside Trail Racing