Colorado · 5K

5K Races in Fort Collins, Colorado

Every upcoming 5K around Fort Collins, with start times, entry fees, finish-time stats from past editions, start-line maps, and the local run clubs to train with.

9 upcoming 5K races found · 7 with finish-time stats

By the numbers

The Biggest and Longest-Running

The Fort Collins races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.

How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Jul 27, 2026.

Common Questions About Running a 5K in Fort Collins

When are most 5K races held in Fort Collins?

October is the busiest month for 5K races in Fort Collins, with 3 of the 9, followed by August with 2. If you are flexible on the date, that is the quickest way to narrow things down.

How much do Fort Collins 5K races cost?

Entry fees for 5K races here run from free to about $40, depending on the event and how early you register.

How early should I register for a 5K in Fort Collins?

5 of the 9 5K races in Fort Collins already have a price increase scheduled, so entry gets more expensive the longer you leave it. Race pricing almost always steps up as the date approaches, and signing up early is usually the cheapest option.

Are Fort Collins 5K races beginner-friendly?

Yes, for the most part. Across the 6 5K races in Fort Collins with published results, the typical median finish is around 34:18, which means half of every one of those fields came in slower than that. Recreational runners and walk-runners are the bulk of these fields, not the exception.

Where can I train for a 5K in Fort Collins?

Browse Fort Collins run clubs on RunSesh to find a training group at your pace.

Are there trail 5K races near Fort Collins?

Yes, one race around Fort Collins gets you off the pavement: 1 is a trail race. Surfaces are not always published, so it is worth checking a specific race before you register.