US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

1,452 races

Jackson County 50-50 Ultramarathon

December 02, 2017 Race day in 8 days
USA / East North Central / Indiana / Brownstown
Ultramarathon
Trail

Jackson County 50-50 Ultramarathon

December 02, 2017 Race day in 8 days
USA / East North Central / Indiana / Brownstown
Ultramarathon
Trail

King of the Mountain 50K

December 02, 2017 Race day in 8 days
USA / South Atlantic / South Carolina / Blacksburg
Ultramarathon

Redbird Crest 100K

December 02, 2017 Race day in 8 days
USA / East South Central / Kentucky / Big Creek
Ultramarathon
Trail

TARC Fells Trail Ultra

December 02, 2017 Race day in 8 days
USA / New England / Massachusetts / Stoneham
Ultramarathon
Trail Tarc Trail Series

TARC Fells Trail Ultra

December 02, 2017 Race day in 8 days
USA / New England / Massachusetts / Stoneham
Ultramarathon
Trail Tarc Trail Series

High Desert 50K Ultramarathon and 30K

December 03, 2017 Race day in 9 days
USA / Pacific / California / Ridgecrest
Ultramarathon
Trail

Bell Ringer 50k/25k

December 09, 2017 Race day in 15 days
USA / East South Central / Tennessee / Burns
Ultramarathon
Trail

Bigfoot 50K

December 09, 2017 Race day in 15 days
USA / East North Central / Ohio / Salt Fork State Park, Lore City
Ultramarathon
Trail Western Reserve Racing

Brazos Bend 100

December 09, 2017 Race day in 15 days
USA / West South Central / Texas / Needville
Ultramarathon
Flat Fun Trail Fast Relay

Brazos Bend 100

December 09, 2017 Race day in 15 days
USA / West South Central / Texas / Needville
Ultramarathon
Flat Fun Trail Fast

Bulow Woods Trail Race and Ultra Marathon

December 09, 2017 Race day in 15 days
USA / South Atlantic / Florida / Ormond Beach
Ultramarathon
Trail