US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

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1,373 races

Run LOVit

LOVit 100 Mile
February 24, 2017 Race day in 5 days
USA / West South Central / Arkansas / Hot Springs
Ultramarathon - 100 miles
Trail

The Dunes 100

100 Miler
February 25, 2017 Race day in 6 days
USA / South Atlantic / Florida / Jupiter
Ultramarathon - 100 miles
Trail

The Dunes 100

100 Mile Team Relay
February 25, 2017 Race day in 6 days
USA / South Atlantic / Florida / Jupiter
Ultramarathon - 100 miles
Trail Relay

The Dunes 100

50 Miler
February 25, 2017 Race day in 6 days
USA / South Atlantic / Florida / Jupiter
Ultramarathon - 50 miles
Trail

Chena River to Ridge Endurance Race

Chena River to Ridge Endurance Race 45 Mile
February 25, 2017 Race day in 6 days
USA / Pacific / Alaska / Fairbanks
Ultramarathon - 45 miles
Trail Snow

Hashawha Hills 50 km Trail Run

February 25, 2017 Race day in 6 days
USA / South Atlantic / Maryland / Westminster
Ultramarathon - 50 kilometers
Trail

Run LOVit

LOVit 100k
February 25, 2017 Race day in 6 days
USA / West South Central / Arkansas / Hot Springs
Ultramarathon - 100 kilometers
Trail

Mount Cheaha 50K

February 25, 2017 Race day in 6 days
USA / East South Central / Alabama / Delta
Ultramarathon - 50 kilometers
Trail Pinhoti Trail Series

Black Mountain Marathon

Mount Mitchell Challenge
February 25, 2017 Race day in 6 days
USA / South Atlantic / North Carolina / Black Mountain
Ultramarathon - 40 miles
Trail

Orange Curtain

Orange Curtain 100K
February 25, 2017 Race day in 6 days
USA / Pacific / California / Liberty Park, Cerritos
Ultramarathon - 100 kilometers
Road Running

Orange Curtain

Orange Curtain 50K Afternoon
February 25, 2017 Race day in 6 days
USA / Pacific / California / Liberty Park, Cerritos
Ultramarathon - 50 kilometers
Road Running

Orange Curtain

Orange Curtain 50K Morning
February 25, 2017 Race day in 6 days
USA / Pacific / California / Liberty Park, Cerritos
Ultramarathon - 50 kilometers
Road Running

Orcas Island 100

February 25, 2017 Race day in 6 days
USA / Pacific / Washington / Orcas Island
Ultramarathon - 100 miles
Trail Mountain

Psycho Wyco Run Toto Run

Psycho Wyco Run Toto Run 50K
February 25, 2017 Race day in 6 days
USA / West North Central / Kansas / Kansas City
Ultramarathon - 50 kilometers
Hilly Trail

Salmon Falls 50K

February 25, 2017 Race day in 6 days
USA / Pacific / California / Pilot Hill
Ultramarathon - 50 kilometers
Trail