Colorado · 10K

10K Races in Littleton, Colorado

Every upcoming 10K around Littleton, with start times, entry fees, finish-time stats from past editions, start-line maps, and the local run clubs to train with.

4 upcoming 10K races found · 3 with finish-time stats

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By the numbers

The Biggest and Longest-Running

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

Largest field95 finishersHRCA Wildcat Mountain Trail Racesin the 10K

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 10K in Littleton

When are most 10K races held in Littleton?

October is the busiest month for 10K races in Littleton, with 3 of the 4. If you are flexible on the date, that is the quickest way to narrow things down.

How much do Littleton 10K races cost?

Entry fees for 10K races here run from $20 to about $50, depending on the event and how early you register.

How early should I register for a 10K in Littleton?

2 of the 4 10K races in Littleton 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 Littleton 10K races beginner-friendly?

Yes, for the most part. Across the 3 10K races in Littleton with published results, the typical median finish is around 1:02:30, 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.

Where can I train for a 10K in Littleton?

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

Are there trail 10K races near Littleton?

Yes, one race around Littleton 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.