2014 - 2015 Colorado Trail Ultramarathon Calendar in May

Browse our Ultramarathon Calendar for races organized in Colorado during the month of May bearing the tag Trail among 2 races.

2 races

  • Collegiate Peaks 50M Trail Run

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

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