Colorado · 5K

5K Races in Colorado

Every upcoming 5K in Colorado, all 214 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.

214 upcoming 5K races · 112 with finish-time stats

10K 87Half Marathon 77Marathon 11Ultra 5
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By the numbers

The Biggest and Longest-Running

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

Largest field3,409 finishersYMCA Turkey Trot 5Kin the 5KLongest-running20th year20th Annual Golden Gallopannual tradition

5K Races by City

Centennial 32Denver 29Colorado Springs 15Littleton 13Westminster 11Arvada 10Fort Collins 9Pueblo 7Thornton 6Grand Junction 5Aurora 4Greeley 4Windsor 4Louisville 3Parker 3Loveland 3Buena Vista 3Golden 3Broomfield 3Boulder 3Highlands Ranch 2Canon City 2Breckenridge 2Oak Creek 2

Soonest 5K Races in Colorado

214 total
Sat, Aug 1, 202612th Annual Run for the Ring Aurora, CO5KFrom $43Details Sat, Aug 1, 2026Unicorn 5k (South) Highlands Ranch, CO5KFrom $20Details Sat, Aug 1, 2026Flying Colors 5K Fun Run/Walk Craig, CO5KFrom $30Details Sat, Aug 1, 2026STEPS TO EMPOWER Colorado Springs, CO1 Mile5KFrom $25Details Sat, Aug 1, 2026Popsicle 5K/10K/Half - Colorado Springs Colorado Springs, CO5K10KHalf MarathonFrom $38Details Sat, Aug 1, 2026Move with MADD Denver 5K Denver, CO5KFrom $15Register Tue, Aug 4, 2026Eltuck Valley 5K - Lory Summer Trail Series Fort Collins, CO5KFrom $30Details Fri, Aug 7, 2026RMRR August 5km and picnic Centennial, CO5KFrom $10Details Fri, Aug 7, 2026Choice City Running Festival Fort Collins, CO1 MileHalf Marathon10K5KFrom $33Details Sat, Aug 8, 2026Arapahoe Warrior 5K Centennial, CO5KFrom $35Details Sat, Aug 8, 2026Summer Sizzler- Denver Thornton, CO50m1 Mile5K10KFrom $22Details Sat, Aug 8, 2026Escalante Days 5K Dolores, CO5KFrom $30Details

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 Colorado

Which Colorado cities have the most 5K races?

Centennial (32), Denver (29), Colorado Springs (15), Littleton (13) lead the state for 5K races. Those give you the most dates to choose from if your schedule is tight.

When are most 5K races held in Colorado?

September is the busiest month for 5K races in Colorado, with 53 of the 214, followed by August with 45. If you are flexible on the date, that is the quickest way to narrow things down.

How much do Colorado 5K races cost?

Entry fees for 5K races here run from free to about $500, depending on the event and how early you register.

How early should I register for a 5K in Colorado?

107 of the 214 5K races in Colorado 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 Colorado 5K races beginner-friendly?

Yes, for the most part. Across the 110 5K races in Colorado with published results, the typical median finish is around 36:30, 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.

Are there trail 5K races in Colorado?

Yes, 27 races around Colorado get you off the pavement: 15 are trail races, and 12 mix road and trail. Surfaces are not always published, so it is worth checking a specific race before you register.