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Colorado Marathon

May 2, 2027 · 6:30 AMFort Collins, CO, United States

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Race Day

55°F

37–68°F · Feels mild

Total elevation gain

591ft

Moderate rolling hills · Net elevation change +98 ft

Participants

2,000

Medium-sized race

Crowd Rating

6/ 10

Good crowd energy

The Lowdown

The Colorado Marathon in Fort Collins is a scenic Spring marathon with courses through Poudre Canyon and into downtown Fort Collins. It also includes a half-marathon, 10K, and 5K. Many runners target this downhill course for fast times and Boston qualifiers.

Minimum Age: 18 years
Entry Methods: Online registration via RunSignUp.
Eligibility: Minimum age 18 on race day to register for the full marathon
Runners aged 16–17 may participate in the full marathon only with a signed parent/guardian consent form and race director approval
Valid government-issued photo ID required at packet pickup
Official race bib must be worn and visible at all times; bib transfers are prohibited unless approved in writing by race management prior to packet pickup
Race cutoff time 6 hours 30 minutes from gun time (participants not meeting pace may be removed from course)
Wheelchair and handcycle athletes must register in the appropriate division and notify race organizers in advance
No pets or baby strollers allowed on the marathon course
Medical clearance recommended for participants with pre-existing conditions; carry personal medical information on race day
No race-day refunds; deferral, bib transfer, or charity options handled per race policy and deadlines posted on the official website
All participants must follow race rules, directions from officials and volunteers, and local/state laws while on course
Required Documents: Valid ID at packet pickup
Cancellation & Refund Policy: No refunds or transfers; entries are non-transferable.

Prepare for This Race

Pace CalculatorPlan splits for marathon Race PredictorPredict your marathon time BQ CalculatorBQ-eligible course Fuel PlannerPlan nutrition for marathon, moderate weather Difficulty Analyzer591ft gain, 55°F avg, marathon Training PacesTraining zones for marathon

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