2017 - 2018 Colorado Ultramarathon Calendar

Browse our Ultramarathon Calendar for races organized in Colorado among 56 races.

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56 races

Ultimate Direction Dirty 30

50K
June 03, 2017 Race day in 4 days
USA / Mountain Region / Colorado / Golden Gate Canyon State Park
Ultramarathon - 50 kilometers
Charity Trail Mountain

North Fork 50 Mile/50K Trail Race

50K Trail Race
June 03, 2017 Race day in 4 days
USA / Mountain Region / Colorado / Pine Valley Ranch Park, Pine
Ultramarathon - 50 kilometers
Trail Mountain

North Fork 50 Mile/50K Trail Race

50 Mile Trail Race
June 03, 2017 Race day in 4 days
USA / Mountain Region / Colorado / Pine Valley Ranch Park, Pine
Ultramarathon - 50 miles
Trail Mountain

South Park Trail Marathon and Half

South Park Trail Marathon
June 10, 2017 Race day in 11 days
USA / Mountain Region / Colorado / Fairplay
Ultramarathon - 28 miles
Trail

San Juan Solstice 50 Mile Run

June 24, 2017 Race day in 25 days
USA / Mountain Region / Colorado / Lake City
Ultramarathon - 50 miles
Trail Mountain

Sheep Mountain 50 Mile Endurance Run

July 08, 2017 Race day in about 1 month
USA / Mountain Region / Colorado / Fairplay
Ultramarathon - 51 miles
Trail

Leadville Silver Rush 50

July 09, 2017 Race day in about 1 month
USA / Mountain Region / Colorado / Leadville
Ultramarathon - 50 miles
Trail Mountain

Hardrock 100 Endurance Run

July 14, 2017 Race day in about 2 months
USA / Mountain Region / Colorado / Silverton
Ultramarathon - 100 miles
UTMB Qualifier Trail Mountain

Never Summer 100km

July 22, 2017 Race day in about 2 months
USA / Mountain Region / Colorado / Gould
Ultramarathon - 100 kilometers
Trail

High Lonesome 100

July 28, 2017 Race day in about 2 months
USA / Mountain Region / Colorado / Salida
Ultramarathon - 100 miles

Grand Mesa 100

100 Miles
July 29, 2017 Race day in 2 months
USA / Mountain Region / Colorado / Grand Mesa
Ultramarathon - 100 miles
Hilly Trail

Pike Peak Ultra

50 Mile
July 29, 2017 Race day in 2 months
USA / Mountain Region / Colorado / Colorado Springs
Ultramarathon - 50 miles
Trail Mountain

Grand Mesa 100

50 Mile
July 29, 2017 Race day in 2 months
USA / Mountain Region / Colorado / Grand Mesa
Ultramarathon - 50 miles
Trail

Grand Mesa 100

55 km
July 29, 2017 Race day in 2 months
USA / Mountain Region / Colorado / Grand Mesa
Ultramarathon - 55 kilometers
Trail

Ouray 100 Mile Endurance Run

102.1 Miles
August 04, 2017 Race day in 2 months
USA / Mountain Region / Colorado / Ouray
Ultramarathon - 102.100 miles
Trail Mountain Ever Run Racing