2018 - 2019 Colorado Ultramarathon Calendar

Browse our Ultramarathon Calendar for races organized in Colorado among 48 races.

48 races

John Cappis 50K Fat Ass

2018-07-07 - 05:00
North America / USA / Mountain Region / Colorado / Silverton
Ultramarathon
Trail Running Mountain

Ouray 100 Mile Endurance Run

102.1 Miles
2018-07-27 - 08:00
North America / USA / Mountain Region / Colorado / Ouray
Ultramarathon
Mountain Trail Running Mountain Solo

Audi Power of Four Trail Run

50K
2018-07-28 - 06:00
North America / USA / Mountain Region / Colorado / Aspen
Ultramarathon
Trail Running Solo

Never Summer 100km

2018-07-28 - 05:30
North America / USA / Mountain Region / Colorado / Gould
Ultramarathon
Western States Qualifier Trail Running Mountain Solo

Ouray 100 Mile Endurance Run

51.9 Miles
2018-07-28 - 12:00
North America / USA / Mountain Region / Colorado / Ouray
Ultramarathon
Mountain Trail Running Mountain Solo

Pike Peak Ultra

50 Mile
2018-07-28 - 05:30
North America / USA / Mountain Region / Colorado / Colorado Springs
Ultramarathon
Mountain Trail Running Mountain Solo

Pike Peak Ultra

50K
2018-07-28 - 06:30
North America / USA / Mountain Region / Colorado / Colorado Springs
Ultramarathon
Mountain Trail Running Mountain Solo

Silverton Alpine Marathon

Silverton Alpine 50K
2018-07-28 - 07:00
North America / USA / Mountain Region / Colorado / Silverton
Ultramarathon
Mountain Trail Running Mountain Solo

Ragnar Relay Colorado

Ultra
2018-08-10
North America / USA / Mountain Region / Colorado / Aspen
Ultramarathon
Mountain Road Running Mountain Relay

Ragnar Relay Colorado

Regular
2018-08-10
North America / USA / Mountain Region / Colorado / Aspen
Ultramarathon
Mountain Road Running Mountain Relay

Continental Divide Trail Run

50K
2018-08-25 - 06:00
North America / USA / Mountain Region / Colorado / Steamboat Springs
Ultramarathon
Trail Running Solo

Telluride Mountain Run

38 Mile
2018-08-25 - 05:00
North America / USA / Mountain Region / Colorado / Telluride
Ultramarathon
Trail Running Mountain Solo
Upcoming races first Name A->Z Name Z->A Location A->Z Location Z->A Date older->newer Date newer-> older