Boulder Running Events

Running Events Happening Next in Boulder, CO

Tri Boulder Sprint, Olympic & Long Course

 Boulder Reservoir 18 Jul 2026
SPORTS

Boulder Peak Triathlon, Duathlon, & Aquabike

 Boulder Reservoir 12 Jul 2026
SPORTS

2026 Boulder Polar Plunge presented by Spectrum

 Boulder Reservoir 4 Apr 2026

Boulder Rez Half Marathon

 Boulder Reservoir 11 Apr 2026
MARATHONS

Colorado Triathlon (Sprint, Olympic, Duathlon, & Aquabike)

 Boulder Reservoir 6 Jun 2026
SPORTS

2026 Dash & Dine 5k Run Series

 5565 Reservoir Rd, Boulder, CO, United States, Colorado 80301 28 Apr 2026
SPORTS

Boulder Sunrise Triathlon

 Boulder Reservoir 28 Jun 2026
SPORTS

Emerge 5K 2026

 Boulder Reservoir 3 May 2026
WORKSHOPS

Boulder Rez Marathon

 Boulder Reservoir 15 Aug 2026
SPORTS

Dirt Circus Boulder

 Runners Roost (Boulder) 8 Aug 2026
SPORTS

Chelsea Sodaro: An Unlikely Journey to Triathlon, Motherhood, and Ironman World Champion

 Chautauqua Community House 18 Mar 2026
SPORTS

eTown Presents Ellis Paul

 1535 Spruce St, Boulder, CO, United States, Colorado 80302 21 Mar 2026
MUSIC

Lucky Leprechaun 5K

 Twisted Pine Brewing 14 Mar 2026
SPORTS

Boulder Bubbleicious Bubble Run

 Boulder, Colorado, USA 11 Jul 2026
KIDS

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

 Wild Provisions by 4 Noses Brewing Company 27 Jun 2026
WORKSHOPS USD 0 TO 65

CU Diabetes Link 5K

 Visual Arts Complex, Department of Art & Art History 12 Apr 2026
NONPROFIT USD 18 TO 34

Be Kind to Your Mind 1M 5K 10K 13.1 26.2

 Boulder 2 May 2026
SPORTS USD 4 TO 42

2026 Be Brave 1M 5K 10K 13.1 26.2

 Boulder 7 Mar 2026
SPORTS USD 4 TO 42

Blood, Sweat & Spikes at In Motion Running

 In Motion Running 6 May 2026
ART

Avery Spring 5k | Avery Brewing | 2026 CO Brewery Running Series

 Avery Brewing Company 26 Apr 2026
WORKSHOPS USD 0 TO 65

Memorial Day 1M 5K 10K 13.1 26.2

 Boulder 25 May 2026
SPORTS USD 4 TO 42

2026 Race Alotl for the Axolotl 1M 5K 10K 13.1 26.2

 Boulder 8 Mar 2026
SPORTS USD 4 TO 42

2026 First Responders 1M 5K 10K 13.1 26.2

 Boulder 28 Mar 2026
SPORTS USD 4 TO 42

2026 Day of the Dead 1M 5K 10K 13.1 26.2

 Boulder 14 Mar 2026
SPORTS USD 4 TO 42

Luck of the Irish 5K

 Boulder 17 Mar 2026
SPORTS USD 4 TO 42

Harvest Moon Long Course Triathlon

 Boulder Reservoir 31 May 2026
SPORTS

2026 The Truth is Out There 1M, 5K, 10K, 13.1, 26.2

 Boulder 20 Mar 2026
SPORTS USD 4 TO 42

Mother's Day 1M 5K 10K 13.1 26.2

 Boulder 10 May 2026
SPORTS USD 4 TO 42