2014 - 2015 Colorado Race Calendar

Browse our Marathons, Half Marathons, Ultra marathons, Multiday events organized in Colorado among 226 races.

226 races

  • Cheyenne Mtn. Trail 25K Race

    • North America | USA | Mountain Region | Colorado | Cheyenne Mountain State Park
    • Half Marathon to Full Marathon - 25 kilometers
    • April 26, 2014
    • Trail Fast
  • Cheyenne Mtn. Trail 50K Race

    • North America | USA | Mountain Region | Colorado | Cheyenne Mountain State Park
    • Ultramarathon - 50 kilometers
    • April 26, 2014
    • Trail Fast
  • Collegiate Peaks 25M Trail Run

    • North America | USA | Mountain Region | Colorado | Buena Vista
    • Half Marathon to Full Marathon - 25 miles
    • May 03, 2014
    • Trail
  • Collegiate Peaks 50M Trail Run

    • North America | USA | Mountain Region | Colorado | Buena Vista
    • Ultramarathon - 50 miles
    • May 03, 2014
    • Trail
  • Greenland Trail 25k

    • North America | USA | Mountain Region | Colorado | Greenland
    • Half Marathon to Full Marathon - 25 kilometers
    • May 03, 2014 - 08:00
    • Trail
  • Greenland Trail 50k

    • North America | USA | Mountain Region | Colorado | Greenland
    • Ultramarathon - 50 kilometers
    • May 03, 2014 - 08:00
    • Trail
  • Greenland Trail 8k

    • North America | USA | Mountain Region | Colorado | Greenland
    • Shorter than 10 km race - 8 kilometers
    • May 03, 2014 - 08:00
    • Trail
  • Boulder Spring Half

    • North America | USA | Mountain Region | Colorado | Boulder
    • Half Marathon
    • May 04, 2014
    • Road Running
  • Boulder Spring Half - 10 Mile

    • North America | USA | Mountain Region | Colorado | Boulder
    • 10 km race to Half Marathon - 10 miles
    • May 04, 2014
    • Road Running
  • Boulder Spring Half - 5 Mile

    • North America | USA | Mountain Region | Colorado | Boulder
    • Shorter than 10 km race - 5 miles
    • May 04, 2014
    • Road Running
  • Colorado Half Marathon

    • North America | USA | Mountain Region | Colorado | Fort Collins
    • Half Marathon
    • May 04, 2014
  • Colorado Marathon

    • North America | USA | Mountain Region | Colorado | Fort Collins
    • Marathon
    • May 04, 2014
    • Boston Qualifier
  • Colorado Marathon - 10K

    • North America | USA | Mountain Region | Colorado | Fort Collins
    • 10k race
    • May 04, 2014
  • Colorado Marathon - Point to point 5K

    • North America | USA | Mountain Region | Colorado | Fort Collins
    • Shorter than 10 km race - 5 kilometers
    • May 04, 2014
    • Fast
  • New Mexico State Parks Series - Sugarite State Park 5K

    • North America | USA | Mountain Region | Colorado | Sugarite State Park
    • Shorter than 10 km race - 5 kilometers
    • May 08, 2014