Colorado · Marathon · Half Marathon · 10K
Colorado Marathon
Colorado Marathon is a marathon, half marathon, 10K and 5K event held in Fort Collins, Colorado. Its next confirmed date is Sunday, May 2, 2027. About 3,500 runners take part across all distances.
- Race day
- May 2, 2027
- Location
- Fort Collins, CO
- Field size
- ~3,500 runners
Race details
- Date
- Sunday, May 2, 2027
- Location
- Fort Collins, Colorado
- Distances
- Marathon, Half Marathon, 10K, 5K
- Field size
- About 3,500 runners
- Course
- Moderate
- Registration
- comarathon.com
- Official website
- coloradomarathon.com
Registration, course & weather
- Registration status
- Open
- Entry fee
- Listed fee for the longest distance, $176.96 (from runsignup.com, checked September 24, 2026)
- Start time
- 6:30 AM MDT
- Course profile
- Point-to-point course; Road surface; 206 ft gain, 1336 ft loss (estimated from third-party elevation data); USATF certified; Boston qualifier
About the Colorado Marathon
A fast, scenic point-to-point race that descends the Cache la Poudre Canyon into Fort Collins, with marathon and half-marathon courses plus 10K and 5K options in town. It's one of Colorado's top Boston-qualifying races and regularly sells out.
Rankings and notes
- Rankings and awards
- Billed as Colorado's fastest downhill race; roughly 16-18% of runners qualify for Boston; USATF-certified
- Notes
- Smaller regional marathon
More marathons in Colorado
Coming up next, by confirmed date.
-
Run Through Time Trail Marathon and Half MarathonSalida, COMarathonHalf Marathon10K5K +1 more ~3,133 runners
-
Bound for Boston Marathon & Half Marathon - DenverDenver, COMarathonHalf Marathon10K5K ~150 runners
More races in Fort Collins
More upcoming races in Colorado
Keep exploring
- All races in Colorado
- 5Ks in Colorado 120 upcoming races
- 10Ks in Colorado 70 upcoming races
- Half Marathons in Colorado 51 upcoming races
- Marathons in Colorado 13 upcoming races
- Running in Fort Collins 6 upcoming races
- 5Ks in the United States 6,000 upcoming races
- 10Ks in the United States 2,572 upcoming races
- Half Marathons in the United States 1,668 upcoming races
- Marathons in the United States 594 upcoming races
- Spring Marathons
- May Marathons
- May races in Colorado
- Marathons in Utah 19 upcoming races
- Marathons in Kansas 10 upcoming races
- Marathons in New Mexico 9 upcoming races
- Marathons in Nebraska 9 upcoming races
Guides from the RaceRove blog
- 8 min read How to Choose Your First Marathon A practical checklist for choosing a first marathon based on course, weather, cutoff, travel, field size and support.
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Colorado Marathon: common questions
- When is the Colorado Marathon?
- The next confirmed date is Sunday, May 2, 2027.
- Where is the Colorado Marathon held?
- In Fort Collins, Colorado.
- What distances does the Colorado Marathon offer?
- Marathon, Half Marathon, 10K and 5K.
- How many people run the Colorado Marathon?
- About 3,500 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Colorado Marathon?
- Registration is handled by the organiser at comarathon.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Colorado Marathon?
- Yes — registration is open. Listed fee for the longest distance, $176.96 (from runsignup.com, checked September 24, 2026).
- What time does the Colorado Marathon start?
- 6:30 AM MDT.
- What is the course like at the Colorado Marathon?
- Point-to-point course; Road surface; 206 ft gain, 1336 ft loss (estimated from third-party elevation data); USATF certified; Boston qualifier.
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.