Running Races in Fort Collins, Colorado
12 upcoming races in Fort Collins, updated nightly. For radius search from your exact zip, use the Race Finder.
Looking beyond Fort Collins? Search Windsor 5K options in the Race Finder.
Racing in Fort Collins: what the calendar looks like
There are 12 upcoming races on the Fort Collins calendar over the next 12 months, with race dates in 8 of the next 12 months. Among complete calendar months, December 2026 has the most listed races, with 3. By race count, Fort Collins ranks 5th among Colorado cities.
Of those, 7 offer a 5K, 3 offer a Half Marathon and 2 offer a 1 Mile. The next marathon on the calendar is The Colorado Marathon on May 2. The next half marathon is RunningU/Horsetooth Half Marathon Training Presented by Bachus & Schanker on January 3. Where fees are published, the median entry in Fort Collins is $25, below the Colorado median of $30.
Close enough for a race-day drive: Estes Park (8 races, 27 miles).
Races by month
- Nov 20263 races
- Dec 20263 races
- Jan 20271 race
- Mar 20271 race
- Apr 20271 race
- May 20271 race
- Jun 20271 race
- Aug 20271 race
November 2026
- Sat 11/21Turkey-Donut Predict RunFort Collins, CO · 5K · from $5 · register ↗
- Thu 11/26Fort Collins Thanksgiving Day RunFort Collins, CO · 4 Miles · from $25 · register ↗
- Mon 11/30Sporting Chance InitiativeFort Collins, CO · 5K · from $15 · register ↗
December 2026
- Sun 12/6Spring Park T&H 6KFort Collins, CO · 6K · registration closed · register ↗
- Sat 12/19Sweaty Sweater 5kFort Collins, CO · 5K · 1 Mile · from $5 · register ↗
- Thu 12/31Resolution Run - Fort CollinsFort Collins, CO · 5K · from $25 · registration closed · register ↗
January 2027
- Sun 1/3RunningU/Horsetooth Half Marathon Training Presented by Bachus & SchankerFort Collins, CO · Half Marathon · register ↗
March 2027
- Sat 3/6Sharin' O' The Green 5kFort Collins, CO · 5K · from $35 · register ↗
April 2027
- Sun 4/18Horsetooth Half Marathon - Presented by Fort Collins ConnexionFort Collins, CO · Half Marathon · from $75 · register ↗
May 2027
- Sun 5/2The Colorado MarathonFort Collins, CO · Marathon · Half Marathon · 10K · 5K · from $40 · register ↗
June 2027
- Fri 6/11M1LE NationFort Collins, CO · 1 Mile · 0.5 Miles · from $10 · register ↗
August 2027
- Fri 8/6Wild West RelayFort Collins, CO · 200 Miles · from $700 · register ↗
Where to stay in Fort Collins
Race-weekend hotel search, dates prefilled for check-in the night before.
- Jan 3RunningU/Horsetooth Half Marathon Training Presented by Bachus & SchankerFind hotels for this race weekend
- Apr 18Horsetooth Half Marathon - Presented by Fort Collins ConnexionFind hotels for this race weekend
- May 2The Colorado MarathonFind hotels for this race weekend
Hotel links are affiliate links. Booking through them costs you nothing extra and helps keep RunRace USA free.
Planning a race
- Getting inlotteries, qualifiers, and how entry works for the races that sell out
- Lottery watchwhich race lotteries and registration windows are open right now
- Choosing a first marathona practical guide to picking a debut race