2017 - 2018 USA Ultramarathon Calendar in August

Browse our Ultramarathon Calendar for races organized in USA during the month of August among 117 races.

117 races

Cascade Lakes Relay

August 04, 2017 Race day in 3 months
USA / Pacific / Oregon / Bend
Ultramarathon - 132 miles
Relay

Ruby Mountain Relay

August 04, 2017 Race day in 3 months
USA / Mountain Region / Nevada / Elko County
Ultramarathon - 184 miles
Relay

Wild West Relay

August 04, 2017 Race day in 3 months
USA / Mountain Region / Colorado / Fort Collins
Ultramarathon - 200 miles
Road Running RLT Relay Races Relay

Mo' Bell

100K
August 05, 2017 Race day in 3 months
USA / East South Central / Tennessee / Burns
Ultramarathon - 100 kilometers

Mo' Bell

100 Miles
August 05, 2017 Race day in 3 months
USA / East South Central / Tennessee / Burns
Ultramarathon - 100 miles

Mo' Bell

50K - Saturday
August 05, 2017 Race day in 3 months
USA / East South Central / Tennessee / Burns
Ultramarathon - 50 kilometers

Mo' Bell

50 Miles
August 05, 2017 Race day in 3 months
USA / East South Central / Tennessee / Burns
Ultramarathon - 50 miles

Angeles Crest 100 mile endurance run

August 05, 2017 Race day in 3 months
USA / Pacific / California / Wrightwood
Ultramarathon - 100 miles
Trail Western States Qualifier

Beast of Burden Summer 100 Miler & 50 Miler Ultra Marathon

Beast of Burden Summer 100 Miler
August 05, 2017 Race day in 3 months
USA / Mid-Atlantic / New York / Lockport
Ultramarathon - 100 miles

Beast of Burden Summer 100 Miler & 50 Miler Ultra Marathon

Beast of Burden Summer 50 Miler
August 05, 2017 Race day in 3 months
USA / Mid-Atlantic / New York / Lockport
Ultramarathon - 50 miles

Colorado Bend

Colorado Bend - 60k
August 05, 2017 Race day in 3 months
USA / West South Central / Texas / Colorado Bend State Park
Ultramarathon - 60 kilometers
Tejas Trails Trail Night

Crystal Springs Trail Run (summer)

Crystal Springs 50 Km Trail Run (summer)
August 05, 2017 Race day in 3 months
USA / Pacific / California / Woodside
Ultramarathon - 50 kilometers
Coastal Trail Runs Hilly Trail

Dahlgren Heritage Rail Trail 50 km

August 05, 2017 Race day in 3 months
USA / South Atlantic / Virginia / King George
Ultramarathon - 50 kilometers

El Vaquero Loco

El Vaquero Loco 50K
August 05, 2017 Race day in 3 months
USA / Mountain Region / Wyoming / Afton
Ultramarathon - 50 kilometers
Trail Mountain

Vertigo Night Trail Runs

Vertigo 63K Night Trail Run
August 05, 2017 Race day in 3 months
USA / Mountain Region / Arizona / White Tank Mountain Regional Park, Waddell
Ultramarathon - 63 kilometers
Trail Aravaipa Running Night