2017 - 2018 USA Ultramarathon Calendar in August

Browse our Ultramarathon Calendar for races organized in USA during the month of August among 122 races.

122 races

Cascade Lakes Relay

August 04, 2017 Race day in 11 days
USA / Pacific / Oregon / Bend
Ultramarathon
Relay

Ouray 100 Mile Endurance Run

August 04, 2017 Race day in 11 days
USA / Mountain Region / Colorado / Ouray
Ultramarathon
Ever Run Racing Trail Mountain

Ruby Mountain Relay

August 04, 2017 Race day in 11 days
USA / Mountain Region / Nevada / Elko County
Ultramarathon
Relay

Wild West Relay

August 04, 2017 Race day in 11 days
USA / Mountain Region / Colorado / Fort Collins
Ultramarathon
Road Running RLT Relay Races Relay

Angeles Crest 100 mile endurance run

August 05, 2017 Race day in 12 days
USA / Pacific / California / Wrightwood
Ultramarathon
Trail Western States Qualifier

Beast of Burden Summer 100 Miler & 50 Miler Ultra Marathon

August 05, 2017 Race day in 12 days
USA / Mid-Atlantic / New York / Lockport
Ultramarathon

Beast of Burden Summer 100 Miler & 50 Miler Ultra Marathon

August 05, 2017 Race day in 12 days
USA / Mid-Atlantic / New York / Lockport
Ultramarathon

Colorado Bend

August 05, 2017 Race day in 12 days
USA / West South Central / Texas / Colorado Bend State Park
Ultramarathon
Tejas Trails Trail Night

Crystal Springs Trail Run (summer)

August 05, 2017 Race day in 12 days
USA / Pacific / California / Woodside
Ultramarathon
Coastal Trail Runs Hilly Trail

Dahlgren Heritage Rail Trail 50 km

August 05, 2017 Race day in 12 days
USA / South Atlantic / Virginia / King George
Ultramarathon

El Vaquero Loco

August 05, 2017 Race day in 12 days
USA / Mountain Region / Wyoming / Afton
Ultramarathon
Trail Mountain

HURL Elkhorn 50 Mile/50 K Ultramarathons

August 05, 2017 Race day in 12 days
USA / Mountain Region / Montana / Montana City
Ultramarathon
Trail Mountain
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