2018 - 2019 Ultramarathon Calendar in August

Browse our Ultramarathon Calendar for races organized around the world during the month of August among 116 races.

116 races

Mo' Bell

100K
08/04/2018 - 07:00
North America / USA / East South Central / Tennessee / Burns
Ultramarathon
Running

Mo' Bell

50 Miles
08/04/2018 - 07:00
North America / USA / East South Central / Tennessee / Burns
Ultramarathon
Running

Mo' Bell

100 Miles
08/04/2018 - 07:00
North America / USA / East South Central / Tennessee / Burns
Ultramarathon
Running

Mo' Bell

50K - Saturday
08/04/2018 - 07:00
North America / USA / East South Central / Tennessee / Burns
Ultramarathon
Running

Olympus View 50K/35K

50K
08/04/2018 - 08:00 To be confirmed
North America / USA / Pacific / Washington / Olympic National Fores
Ultramarathon
Trail Running Solo

River 2 Sea Relay

08/04/2018 - 06:00
North America / USA / Mid-Atlantic / New Jersey / Lambertville
Ultramarathon
Running

The Mighty Mosquito 99 Mile Trail Relay

99 Mile Trail Run
08/04/2018 - 06:00
North America / USA / Mid-Atlantic / New York / Honeoye Falls
Ultramarathon
Trail Running Solo

The Mighty Mosquito 99 Mile Trail Relay

99 Mile Trail Relay
08/04/2018 - 12:00
North America / USA / Mid-Atlantic / New York / Honeoye Falls
Ultramarathon
Trail Running Relay

Volcanic 50

08/04/2018 - 07:00
North America / USA / Pacific / Washington / Marble Mountain Sno-Park
Ultramarathon
Mountain UTMB Qualifier Trail Running Mountain

Peak to Brew Relay

08/10/2018 - 05:00
North America / USA / Mid-Atlantic / New York / Wilmington
Ultramarathon
Running

Hot Hot Hundred 10k & 100k Relay

100K Relay (1-5 person relay)
08/11/2018 - 08:00
North America / USA / East South Central / Kentucky / Wallingford
Ultramarathon
Running

Trail of the Dragon 50K/50mile Run

50 mile Run
08/11/2018 - 06:00
North America / USA / West North Central / Iowa / Ida Grove
Ultramarathon
Trail Running