Boulder Running Events

Tri Boulder Sprint, Olympic & Long Course

Boulder Reservoir 18 Jul 2026

Boulder Peak Triathlon, Duathlon, & Aquabike

Boulder Reservoir 12 Jul 2026

Boulder Sunrise Triathlon

Boulder Reservoir 28 Jun 2026

Dirt Circus Boulder

Runners Roost (Boulder) 8 Aug 2026

Avery Fall 5k | Avery Brewing | Boulder | 2026 CO Brewery Running Series

Avery Brewing Company 18 Oct 2026

A Running Mechanics Clinic with Bobby McGee

East Boulder Community Center 27 Jun 2026

Boulder Rez Marathon

Boulder Reservoir 15 Aug 2026

Wild Provisions 5k | Boulder | 2026 CO Brewery Running Series

Wild Provisions by 4 Noses Brewing Company 27 Jun 2026

14th Annual Kyle MacIntosh Memorial 5K

Franklin Field At the University of Colorado Boulder 21 Jun 2026

BRR Summer All-Comers Track & Field Meets

Potts Field 26 Jun 2026

Boulder Bubbleicious Bubble Run

Boulder, Colorado, USA 11 Jul 2026

Grit2Greatness Endurance Training Camp 2026 - Boulder, CO

Boulder Reservoir 25 Jun 2026

Plant Forward Boulder Potluck: Dine with a Dietician

NoBo Library - Boulder Public Library District 21 Jun 2026

2 Year Anniversary Run/Hike with Anthony Lee

1220 Spruce St 20 Jun 2026

Stride & Strategy Flatirons Vista 7/25/2026

Flatirons Vista Trailhead 25 Jul 2026

STRIDE & STRATEGY Davidson Mesa 7/11/2026

N McCaslin Blvd & Washington Ave 11 Jul 2026

STRIDE & STRATEGY Davidson Mesa 8/22/2026

South 80th Street 22 Aug 2026

Day of the Dog Virtual Race 1M 5K 10K 13.1 26.2

Boulder 22 Aug 2026

Lavender Virtual Race 1M 5K 10K 13.1 26.2 | Language of Flowers Collection

Boulder 27 Jun 2026

Memorial Day 1M 5K 10K 13.1 26.2

Boulder 25 May 2026

2026 Born to Be a Princess 1M 5K 10K 13.1 26.2 - Now Only $16!

Boulder 1 Nov 2026

Cat Day Virtual Race 1M 5K 10K 13.1 26.2

Boulder 9 Aug 2026

Unhinged and Feral 1M 5K 10K 13.1 26.2 - Now Only $18!

Boulder 3 Oct 2026

2026 Race to Read 1M 5K 10K 13.1 26.2

Boulder 6 Mar 2026