When are most 10K races held in Westminster?
September is the busiest month for 10K races in Westminster, with 2 of the 8, followed by December with 2. If you are flexible on the date, that is the quickest way to narrow things down.
Colorado · 10K
10K Races in Westminster, Colorado
Every upcoming 10K around Westminster, with start times, entry fees, finish-time stats from past editions, start-line maps, and the local run clubs to train with.
8 upcoming 10K races found · 7 with finish-time stats
By the numbers
The Biggest and Longest-Running
The Westminster races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
Sun, Aug 23, 2026Pioneer Prairie Dog Half, 10k & 5k Westminster, COFrom $45Details Sat, Sep 5, 2026Golden Harvest Half Marathon & 5k/10k - Denver Westminster, COFrom $22Details Sat, Sep 19, 2026All-Out Fall Fest Westminster, COFrom $50Details Sat, Dec 5, 2026All-Out Fa La La Westminster, COFrom $40Details Sun, Dec 6, 2026Candy Cane Course - Denver Westminster, COFrom $27Details Sat, Apr 24, 2027All-Out Beat the Heat Westminster, COFrom $35Details Sun, May 9, 2027Colorado Women's Classic - Westminster Westminster, COFrom $40Details Sat, Jul 10, 2027All-Out Dog Days Westminster, COFrom $35Details
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 Westminster
How much do Westminster 10K races cost?
Entry fees for 10K races here run from $22 to about $50, depending on the event and how early you register.
How early should I register for a 10K in Westminster?
6 of the 8 10K races in Westminster 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 Westminster 10K races beginner-friendly?
Yes, for the most part. Across the 6 10K races in Westminster with published results, the typical median finish is around 1:05:54, 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 Westminster?
Browse Westminster run clubs on RunSesh to find a training group at your pace.
Are there trail 10K races near Westminster?
Yes, 3 races around Westminster get you off the pavement: 3 are trail races. Surfaces are not always published, so it is worth checking a specific race before you register.