US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

1,450 races

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

Arctic Frog

December 03, 2016 The race has already taken place.
USA / East North Central / Illinois / Libertyville
Ultramarathon

Rock Cut Hobo Trail Runs

September 09, 2016 The race has already taken place.
USA / East North Central / Illinois / Rockford
Ultramarathon
Trail

Potawatomi Trail Runs

April 07, 2017 The race has already taken place.
USA / East North Central / Illinois / Pekin
Ultramarathon
Hilly Trail

Chicago Lakefront 50K George Cheung Memorial Race

April 08, 2017 The race has already taken place.
USA / East North Central / Illinois / Chicago
Ultramarathon

Clinton Lake Ultra

March 25, 2017 The race has already taken place.
USA / East North Central / Illinois / Dewitt
Ultramarathon

Frozen Gnome

January 07, 2017 The race has already taken place.
USA / East North Central / Illinois / Crystal Lake
Ultramarathon
Trail Snow

Potawatomi Trail Runs

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

Reebok Ragnar Chicago

May 18, 2018 Race day in 6 months
USA / East North Central / Illinois / Chicago
Ultramarathon

Evergreen Lake Ultras

September 09, 2017 The race has already taken place.
USA / East North Central / Illinois / Hudson
Ultramarathon
Trail Fast

Evergreen Lake Ultras

September 09, 2017 The race has already taken place.
USA / East North Central / Illinois / Hudson
Ultramarathon
Trail Fast