The Colorado Marathon
Decision scores
Six 0–100 scores telling you, at a glance, who this race is for.
Best for
About the Race
01/05/26 Update: We have less than 100 Charity Fund entries for the full marathon and will probably sell out within a couple of weeks. These entries are the only way to register for the full marathon at this time. Once the Charity Fund entries are sold out, there will be no additional registration for the full marathon. Last year, the Charity Fund entries sold out in less than two weeks. Join us for the Colorado Marathon in Fort Collins this May! Our annual event takes place in the stunning P...
Course Profile
Course profile data unavailable for this race.
Course features
Accessibility & inclusion
Vibe & community
History & past results
Past finisher times and year-over-year participation will appear here once the organizer publishes them.
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Common questions
How hard is the The Colorado Marathon Marathon?
We don't have a verified elevation profile yet — check the organizer's course map for the climb breakdown.
What should I wear?
Dress for ~10°F warmer than the standing temperature once you start running. Throwaway long-sleeve at the start, gloves and a hat for sub-50°F mornings, singlet plus visor when it climbs above 60°F. The race-day forecast above is the source of truth closer to the date.
When does it sell out?
No published deadline. Most races raise the entry fee in tiers and can sell out without warning — sign up early if you're committed.
Similar races worth a look
- More like this in this city: All Marathon races in Fort Collins, CO
- Same distance, same month: Best Marathon races in May
- Same distance, statewide: All Marathon races in Colorado
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