Keep your fitness goals going all year long by signing up for these upcoming running events in Fort Collins. The Choice City is known for having great 5K's, 10K's, and Marathons year-round to keep you busy almost every single month. Check these great races coming up throughout 2026.
- January 11: Tortoise & Hare Series - Fossil Creek Park 5K
- January 24: Polar Bear Run & Plunge
- February 1: Tortoise & Hare Series - Edora Park 8K
- March 1: Tortoise & Hare Series - Lee Martinez Park 10K
- March 14: Sharin' O' Green 5K
- March 29: Spring Equinox Half & 5K
- March 29: Tortoise & Hare Series - Cottonwood Park 12K
- April 19: Horsetooth Half Marathon
- April: CSU Football Grit Run (Awaiting 2026 announcement)
- April 26: Flying Pig 5K
- May 4: Colorado Marathon
- May 9: Quad Rock 50/25mi
- June 7: M1LE Nation Challenge
- July 4: FireKracker 5K
- July 11: Odell Brewing 5K
- August 4-25: Lory Summer Trail Series
- August: 28th Annual Mountain Avenue Mile (Awaiting 2026 announcement)
- August: 43rd Annual Human Race (Awaiting 2026 announcement)
- September 12: Black Squirrel Half
- September 20: Fall Equinox Half & 5-Mile
- September 25-27: Red Feather Trail Jamboree (50K, 50-Mile, Half)
- October 4: OTILLO Swim & Run
- October 4: New Belgium Half & 5K
- October 9: Longview Marathon & Half
- October 17-18: Blue Sky Marathon & Half
- November 7-8: Colorado 24 Hour Run
- November 26th: Fort Collins Thanksgiving Day Run
- December: Sweaty Sweater 5K (Awaiting 2026 announcement)
- December 31: Resolution Run 5K
