US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

1,430 races

Mogollon Monster 100

September 16, 2017 The race has already taken place.
USA / Mountain Region / Arizona / Pine
Ultramarathon
Hilly Trail

Mogollon Monster 100

September 16, 2017 The race has already taken place.
USA / Mountain Region / Arizona / Pine
Ultramarathon
Hilly Trail

Pacifica Summit Run 10K/Half Marathon/30K/50K

September 16, 2017 The race has already taken place.
USA / Pacific / California / San Pedro Valley State Park, Pacifica
Ultramarathon
Trail Urban Coyote Racing

Plain 100 Mile Endurance Run

September 16, 2017 The race has already taken place.
USA / Pacific / Washington / Plain
Ultramarathon
Trail UTMB Qualifier

Plain 100 Mile Endurance Run

September 16, 2017 The race has already taken place.
USA / Pacific / Washington / Plain
Ultramarathon
Trail

The Baker's Revenge Trail Race

September 16, 2017 The race has already taken place.
USA / Mid-Atlantic / New Jersey / Mountainside
Ultramarathon
Trail

The North Face Endurance Challenge Wisconsin Kettle Moraine State Park

September 16, 2017 The race has already taken place.
USA / East North Central / Wisconsin / Eagle
Ultramarathon
Trail The North Face Endurance Challenge

The North Face Endurance Challenge Wisconsin Kettle Moraine State Park

September 16, 2017 The race has already taken place.
USA / East North Central / Wisconsin / Eagle
Ultramarathon
Trail The North Face Endurance Challenge Hilly Fun Green Relay

Youngstown Ultra Trail Classic

September 16, 2017 The race has already taken place.
USA / East North Central / Ohio / Youngstown
Ultramarathon
Trail

Autumn Equinox Ultra

September 17, 2017 The race has already taken place.
USA / East South Central / Alabama / Oak Mountain State Park, Pelham
Ultramarathon
Trail

Flagline Trail Fest

September 17, 2017 The race has already taken place.
USA / Pacific / Oregon / Bend
Ultramarathon
Trail Oregon Trail Ultra Marathon Series

Freetown 50

September 17, 2017 The race has already taken place.
USA / New England / Massachusetts / Assonet
Ultramarathon
Invitation only Trail