Races in Boulder, United States
Find running events in this area
21 upcoming races
View Race Calendar 2026
5K
Lucky Leprechaun 5K (5K)
Mar 15
Boulder, United States
10K
Boulder Rez Half (10 km)
Apr 11
Boulder, United States
5K
Boulder Rez Half (5 km)
Apr 11
Boulder, United States
11 km
Boulder Rez Half (11 km)
Apr 11
Boulder, United States
Half Marathon
Boulder Rez Half
Apr 11
Boulder, United States
5K
Friends of the National Center Science Stride 5K (3.1 Miles)
May 1
Boulder, United States
5K
Dash & Dine 5k #2 (5K)
May 5
Boulder, United States
5K
2026 Dash & Dine 5k Run Series (5K)
May 12
Boulder, United States
5K
2026 Dash & Dine 5k Run Series (5K)
May 19
Boulder, United States
5K
Wild Provisions 5k
Jun 27
Boulder, United States
5K
Boulder Sunrise Run (5 km)
Jun 28
Boulder, United States
10K
Boulder Sunrise Run (10 km)
Jun 28
Boulder, United States
31 km
Boulder Rez Marathon
Aug 15
Boulder, United States
Half Marathon
Boulder Rez Marathon
Aug 15
Boulder, United States
Marathon
Boulder Rez Marathon
Aug 15
Boulder, United States
10K
Boulder Rez Marathon
Aug 15
Boulder, United States
5K
Run Boulderthon: The Boulder Marathon
Sep 27
Boulder, United States
Half Marathon
Run Boulderthon: The Boulder Marathon
Sep 27
Boulder, United States
Marathon
Run Boulderthon: The Boulder Marathon
Sep 27
Boulder, United States
10K
Run Boulderthon: The Boulder Marathon
Sep 27
Boulder, United States
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