US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

1,375 races

Gold Rush 50K

2017-05-13
North America / USA / Pacific / California / Folsom
Ultramarathon
Trail Running Solo

Dirty German Endurance Fest

Dirty German 50K
2017-05-13 - 08:00
North America / USA / Mid-Atlantic / Pennsylvania / Pennypack Park, Philadelphia
Ultramarathon
Trail Running

Quad Rock 50

Quad Rock 50
2017-05-13 To be confirmed
North America / USA / Mountain Region / Colorado / Fort Collins
Ultramarathon
Trail Running

Dirty German Endurance Fest

Dirty German 50 Miles
2017-05-13 - 08:00
North America / USA / Mid-Atlantic / Pennsylvania / Pennypack Park, Philadelphia
Ultramarathon
Trail Running

PCT50 Trail Run

2017-05-13 - 06:00
North America / USA / Pacific / California / Cleveland National Forest
Ultramarathon
Trail Running

Cruel Jewel 100

Cruel Jewel 50 Mile Race
2017-05-19 - 16:00
North America / USA / South Atlantic / Georgia / Blue Ridge
Ultramarathon
Mountain Trail Running Mountain

Cruel Jewel 100

Cruel Jewel 100
2017-05-19 - 14:00
North America / USA / South Atlantic / Georgia / Blue Ridge
Ultramarathon
Mountain Trail Running Mountain

Mayapple Trail Runs

Mayapple 100K Trail Run
2017-05-20
North America / USA / Mid-Atlantic / New Jersey / Milburn
Ultramarathon
Trail Running

San Francisco 50mi/50lm Endurance Run

San Francisco 50 Mile Endurance Run
2017-05-20 - 07:00
North America / USA / Pacific / California / Rodeo Beach, Golden Gate National Recreation, CA
Ultramarathon
Trail Running Hilly

Manchester 2 Monadnock Ultramarathon

2017-05-20
North America / USA / New England / New Hampshire / Manchester
Ultramarathon
Running

San Francisco 50mi/50lm Endurance Run

San Francisco 100 Mile Endurance Run
2017-05-20 - 07:00
North America / USA / Pacific / California / Rodeo Beach, Golden Gate National Recreation, CA
Ultramarathon
Trail Running Hilly

Adrenaline Night Run

Adrenaline 65K Night Run
2017-05-20 - 19:00
North America / USA / Mountain Region / Arizona / McDowell Mountain Regional Park, Fountain Hills
Ultramarathon
Night Race Trail Running
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