Colorado · Half Marathon

Half Marathon Races in Denver, Colorado

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

6 upcoming Half Marathon races found · 4 with finish-time stats

By the numbers

The Biggest and Longest-Running

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

Train for it

Run Clubs in Denver

The fastest way to a start line is a standing group run. These Denver clubs welcome Half Marathon runners of all paces.

Browse all Denver run clubs →

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 Sep 10, 2026.

Common Questions About Running a Half Marathon in Denver

How much do Denver Half Marathon races cost?

Entry fees for Half Marathon races here run from $20 to about $45, depending on the event and how early you register.

Are Denver Half Marathon races beginner-friendly?

Yes, for the most part. Across the 4 Half Marathon races in Denver with published results, the typical median finish is around 2:07:42, 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 Half Marathon in Denver?

Join a local run club. Rocky Mountain Road Runners, Colorado Harriers, Revolution Running and others in Denver welcome runners of all paces, and a weekly group run is the most reliable way to hold a training block together.