Colorado Marathon

MAY
3
2026
Run the scenic Colorado Marathon through Poudre Canyon and along the Cache La Poudre River with marathon, half, 10K and 5K options. Enjoy fast downhill stretches and eco friendly race practices in a Rocky Mountain setting.
Sun 3 May 2026
Marathon Half Marathon 10 kilometers 5 kilometers

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Event overview

The Colorado Marathon is an annual race in Fort Collins, Colorado, set in the Poudre Canyon and the Rocky Mountains. The 2026 edition is scheduled for May 3, 2026. The event has been designated the RRCA Colorado State Marathon Championship for 2023, 2024, and 2025. Organizers report that roughly 16-18% of their participants have qualified for the Boston Marathon in past years.

The race promotes sustainable practices, including digital registration and an e-goody bag to reduce paper waste.

Courses and logistics

The event offers four distances:

  • Marathon
  • Half marathon
  • 10K
  • 5K

Courses run through Poudre Canyon and along the Cache La Poudre River and include downhill sections. An expo is held on the race weekend where participants can register or change distances, subject to capacity limits. When a distance reaches capacity, a limited number of charity entries may remain; once those are sold, registration for that distance closes. The event location is listed as 301 Maple St., Fort Collins, CO 80521. Visit the organization's website for the most recent information.

Marathon
Marathon
Half Marathon
Half Marathon
10 km
10k
5 km

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