US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

1,412 races

Yellowstone-Teton Endurance Race

No race in 2016
USA / Mountain Region / Montana / West Yellowstone
Ultramarathon
Road Running Dreamchasers

Yellowstone-Teton Endurance Race

No race in 2016
USA / Mountain Region / Montana / West Yellowstone
Ultramarathon
Road Running Dreamchasers

100 Mile Endurance Challenge

No race in 2016
USA / Pacific / California / Corona
Ultramarathon
Charity Road Running

100 Mile Endurance Challenge

No race in 2016
USA / Pacific / California / Corona
Ultramarathon
Charity Road Running

Nicholas Wilson Memorial Tashka Trail 50K & 25K

No race in 2017
USA / East South Central / Alabama / Coker
Ultramarathon
Trail

Potawatomi Trail Runs

April 08, 2016 The race has already taken place.
USA / East North Central / Illinois / Pekin
Ultramarathon
Hilly Trail

Potawatomi Trail Runs

April 08, 2016 The race has already taken place.
USA / East North Central / Illinois / Pekin
Ultramarathon
Hilly Trail

Potawatomi Trail Runs

April 08, 2016 The race has already taken place.
USA / East North Central / Illinois / Pekin
Ultramarathon
Hilly Trail Night

Peaks To Prairie Adventure Race

April 24, 2016 The race has already taken place.
USA / Mountain Region / Montana / Red Lodge
Ultramarathon

Vol State 500K Relay

April 29, 2016 The race has already taken place.
USA / East South Central / Kentucky / Hickman
Ultramarathon

Vol State 500K Relay

April 29, 2016 The race has already taken place.
USA / East South Central / Kentucky / Hickman
Ultramarathon

Vol State 500K Relay

April 29, 2016 The race has already taken place.
USA / East South Central / Kentucky / Hickman
Ultramarathon