2017 - 2018 North America Ultramarathon Calendar

Browse our Ultramarathon Calendar for races organized in North America among 1508 races.

1,508 races

Coldwater Rumble

100 Mile Trail Run
January 21, 2017 Race day in 3 days
USA / Mountain Region / Arizona / Goodyear
Ultramarathon - 100 miles
Desert Trail Aravaipa Running

Go Short Go Long Go Very Long 5k, 10k, 25k, 50k, 50k 2-Person Relay

2-Person 50K Relay
January 21, 2017 Race day in 3 days
USA / West South Central / Oklahoma / Tulsa
Ultramarathon - 50 kilometers
Relay

Capitol Peak Mega-Fat Ass

50K
January 21, 2017 Race day in 3 days
USA / Pacific / Washington / Olympia
Ultramarathon - 50 kilometers
Trail

Miracle Match Marathon

50K
January 21, 2017 Race day in 3 days
USA / West South Central / Texas / Waco
Ultramarathon - 50 kilometers

Southern Tour Ultra

50K
January 21, 2017 Race day in 3 days
USA / South Atlantic / North Carolina / Wilmington
Ultramarathon - 50 kilometers
Flat Trail

Pullman Winter Ultra Series - January

50K
January 21, 2017 Race day in 3 days
USA / Pacific / Washington / Pullman
Ultramarathon - 50 kilometers

Southern Tour Ultra

50 Mile Relay
January 21, 2017 Race day in 3 days
USA / South Atlantic / North Carolina / Wilmington
Ultramarathon - 50 miles
Flat Trail Relay

Coldwater Rumble

52K
January 21, 2017 Race day in 3 days
USA / Mountain Region / Arizona / Goodyear
Ultramarathon - 52 kilometers
Desert Trail Aravaipa Running

Coldwater Rumble

52 Mile
January 21, 2017 Race day in 3 days
USA / Mountain Region / Arizona / Goodyear
Ultramarathon - 52 kilometers
Desert Trail Aravaipa Running

Crystal Springs Trail Run

Crystal Springs 50 Km Trail Run
January 21, 2017 Race day in 3 days
USA / Pacific / California / Woodside
Ultramarathon - 50 kilometers
Coastal Trail Runs Hilly Trail

Frozen Dead Guy 50km

January 21, 2017 Race day in 3 days
USA / Mountain Region / Colorado / Nederland
Ultramarathon - 50 kilometers
Trail Mountain Snow

Horseshoe Trail Run

Horseshoe Trail Run 50k
January 21, 2017 Race day in 3 days
USA / West South Central / Texas / Hitchcock
Ultramarathon - 50 kilometers
Trail

River Valley Revenge (Winter)

River Valley Revenge 50K
January 21, 2017 Race day in 3 days
Canada / Alberta / Edmonton
Ultramarathon - 50 kilometers

Salem Lakeshore Frosty Fifty 50k, 25k, and 50k Relay

Salem Lakeshore Frosty 50k
January 21, 2017 Race day in 3 days
USA / South Atlantic / North Carolina / Winston Salem
Ultramarathon - 50 kilometers

Salem Lakeshore Frosty Fifty 50k, 25k, and 50k Relay

Salem Lakeshore Frosty 50k Relay
January 21, 2017 Race day in 3 days
USA / South Atlantic / North Carolina / Winston Salem
Ultramarathon - 50 kilometers
Trail Relay