Colorado · Half
Horsetooth Half Marathon
Horsetooth Half Marathon is a half marathon event held in Fort Collins, Colorado. Its next confirmed date is Sunday, April 18, 2027. About 2,000 runners take part across all distances.
- Race day
- April 18, 2027
- Location
- Fort Collins, CO
- Field size
- ~2,000 runners
Race details
- Date
- Sunday, April 18, 2027
- Location
- Fort Collins, Colorado
- Distances
- Half
- Field size
- About 2,000 runners
- Course
- Net downhill, +917 / -1,154 ft with notable early hills
- Registration
- horsetooth-half.com
Registration, course & weather
- Registration status
- Open
- Start time
- 8:00 AM MDT
- Course profile
- Point-to-point course; Road surface; 917 ft gain, 1154 ft loss (official course data)
About the Horsetooth Half Marathon
A classic Fort Collins half marathon running from Horsetooth Reservoir past Hughes Stadium to a festive finish-line party at New Belgium Brewing. It draws nearly 2,000 runners to one of the state's most beloved courses.
Rankings and notes
- Rankings and awards
- One of Colorado's most iconic half marathons; finishes at New Belgium Brewing
More half marathons in Colorado
Coming up next, by confirmed date.
More races in Fort Collins
More upcoming races in Colorado
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Guides from the RaceRove blog
- 8 min read How to Choose the Best Half Marathon for a PR, Racecation or 50-State Challenge The best half marathon depends on what you want from it. How to choose a course for a personal record, a race worth travelling for, or an efficient stop on a 50-state challenge.
- 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.
Horsetooth Half Marathon: common questions
- When is the Horsetooth Half Marathon?
- The next confirmed date is Sunday, April 18, 2027.
- Where is the Horsetooth Half Marathon held?
- In Fort Collins, Colorado.
- What distances does the Horsetooth Half Marathon offer?
- Half.
- How many people run the Horsetooth Half Marathon?
- About 2,000 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 Horsetooth Half Marathon?
- Registration is handled by the organiser at horsetooth-half.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Horsetooth Half Marathon?
- Yes — registration is open. $85 (from horsetooth-half.com, checked October 5, 2026).
- What time does the Horsetooth Half Marathon start?
- 8:00 AM MDT.
- What is the course like at the Horsetooth Half Marathon?
- Point-to-point course; Road surface; 917 ft gain, 1154 ft loss (official course data).
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.