10K Races Near Fort Collins, CO
As of October 6, 2026, Crewable lists 7 upcoming 10K races near Fort Collins, CO from October 2026 to May 2027. The next is Ghosts and Goblins 5K/10K on October 25 in Denver, CO. Registration is open for 5.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
Race calendar
October 2026
1 raceNovember 2026
4 racesCity Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)
Denver, CO10K5K+1Open until Nov 7from $23
December 2026
1 raceMay 2027
1 raceQuick answers
What is the next 10K race near Fort Collins, CO?
Ghosts and Goblins 5K/10K, on Sunday, October 25, 2026, in Denver, CO. Distances: 10K, 5K.
What is the closest 10K race to Fort Collins?
Santa's Summit Slam in Estes Park, CO, about 31 miles from Fort Collins, on December 19, 2026.
How many 10K races near Fort Collins, CO have open registration?
5 of the 7 list registration as open as of October 6, 2026, including Ghosts and Goblins 5K/10K, All-Out Kooky-Spooky and City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research).
What is the busiest month for 10K races near Fort Collins, CO?
November 2026, with 4 of the 7. October 2026 follows with 1.
Nearby cities
Nearby states
More ways to browse
Race planning
Plan your Fort Collins race
Aid stations, cutoffs and pacing in one free plan. Crew invites and race-day updates come with a Race Pass.
Plan a race free