US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

Refine by

1,400 races

Grizzly Peak Trail Run

Grizzly Peak 50 Km Trail Run
April 15, 2017 The race has already taken place.
USA / Pacific / California / Berkeley
Ultramarathon - 50 kilometers
Coastal Trail Runs Hilly Trail

Lake Sonoma 50

April 15, 2017 The race has already taken place.
USA / Pacific / California / Geyserville
Ultramarathon - 50 miles
Hilly Trail

Spitfire Ultra Trail Challenge at Menan Butte

Menan Butte Trail Challenge 50K
April 15, 2017 The race has already taken place.
USA / Mountain Region / Idaho / Menan
Ultramarathon - 50 kilometers

Palouse 100K Relay & Solo

Palouse 100K Relay - 2-3 runners
April 15, 2017 The race has already taken place.
USA / Pacific / Washington / Pullman
Ultramarathon - 100 kilometers
Palouse Road Runners

Palouse 100K Relay & Solo

Palouse 100K Relay - 4-10 runners
April 15, 2017 The race has already taken place.
USA / Pacific / Washington / Pullman
Ultramarathon - 100 kilometers
Palouse Road Runners

Palouse 100K Relay & Solo

Palouse 100K Solo
April 15, 2017 The race has already taken place.
USA / Pacific / Washington / Pullman
Ultramarathon - 100 kilometers
Palouse Road Runners

Rattler Trail Races

Rattler Trail Races 50K
April 15, 2017 The race has already taken place.
USA / Mountain Region / Colorado / Colorado Springs
Ultramarathon - 50 kilometers
Trail

Rattlesnake Ridge Run

Rattlesnake Ridge Run 50K
April 15, 2017 The race has already taken place.
USA / Pacific / Washington / Rattlesnake Lake
Ultramarathon - 50 kilometers
Northwest Trail Runs Trail

Ruth Anderson Ultras

Ruth Anderson 100k
April 15, 2017 The race has already taken place.
USA / Pacific / California / San Francisco
Ultramarathon - 100 kilometers

Ruth Anderson Ultras

Ruth Anderson 50k
April 15, 2017 The race has already taken place.
USA / Pacific / California / San Francisco
Ultramarathon - 50 kilometers

Ruth Anderson Ultras

Ruth Anderson 50M
April 15, 2017 The race has already taken place.
USA / Pacific / California / San Francisco
Ultramarathon - 50 miles

Don’t Run Boston 50K & TARC 50M

TARC 50M
April 15, 2017 The race has already taken place.
USA / New England / Massachusetts / Milton
Ultramarathon - 50 miles
Trail Tarc Trail Series