Running races in or near Boulder, CO
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Boulder, CO area. Races listed here include both walking and running events of various distances — from 1-milers, to 5Ks, to marathons, and everything else in between.
Running of the Green
Organization: Fort Lupton Recreation Center
Date of Race: 03-14-2026
Description: DescriptionFamily fun Run ( wear your green) best dress wins a ...
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Running of the Green
Organization: Fort Lupton Recreation Center
Date of Race: 03-14-2026
Description: DescriptionFamily fun Run ( wear your green) best dress wins a ...
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Running of the Green
Organization: Fort Lupton Recreation Center
Date of Race: 03-14-2026
Description: DescriptionFamily fun Run ( wear your green) best dress wins a ...
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Muddy Dash | Denver 2026
Organization: Viral Run
Date of Race: 06-20-2026
Description: Muddy Dash is not your average mud run! Get ready for ...
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Muddy Dash - Exclusive VIP Registration - ...
Organization: Viral Run
Date of Race: 06-20-2026
Description: Muddy Dash is not your average mud run! Get ready for ...
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Muddy Dash - VALUE REGISTRATION - R̶e̶g̶u̶l̶a̶r̶ ...
Organization: Viral Run
Date of Race: 06-20-2026
Description: Muddy Dash is not your average mud run! Get ready for ...
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Valentine’s Day Biscuits & Gravy Breakfast
Organization: Commerce City Recreation Department
Date of Race: 02-13-2026
Description: DescriptionBring your sweetie, your friends, and your family to the Eagle ...
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Price
Organization: Colorado Womens Basketball
Date of Race: 06-15-2026
Description: DescriptionBring your sweetie, your friends, and your family to the Eagle ...
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Individual Camp I
Organization: Colorado Womens Basketball
Date of Race: 06-15-2026
Description: Individual Camp is a great opportunity for any player looking to ...
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Little Dribblers Camp I
Organization: Colorado Womens Basketball
Date of Race: 06-15-2026
Description: Little Dribblers Camp is for the first time camper or a ...
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Price
Organization: Colorado Womens Basketball
Date of Race: 06-15-2026
Description: Little Dribblers Camp is for the first time camper or a ...
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Bubble Fun Run
Organization: Commerce City Recreation Department
Date of Race: 05-16-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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<< SELECT SESSION
Organization: Mighty Movement
Date of Race: 06-15-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Organization: Mighty Movement
Date of Race: 07-13-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Week 07 | Ages 8-11 | 10am-2pm @ ...
Organization: Mighty Movement
Date of Race: 07-13-2026
Description: LOUISVILLE'S BEST ACTIVE SUMMER CAMP: Get Outside, Work Hard, Have Fun! ...
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Week 09 | Ages 12-15 | 10am-2pm @ ...
Organization: Mighty Movement
Date of Race: 07-27-2026
Description: LOUISVILLE'S BEST ACTIVE SUMMER CAMP: Get Outside, Work Hard, Have Fun! ...
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Organization: Mighty Movement
Date of Race: 07-20-2026
Description: LOUISVILLE'S BEST ACTIVE SUMMER CAMP: Get Outside, Work Hard, Have Fun! ...
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Organization: Mighty Movement
Date of Race: 08-03-2026
Description: LOUISVILLE'S BEST ACTIVE SUMMER CAMP: Get Outside, Work Hard, Have Fun! ...
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Week 06 | Ages 12-15 | 10am-2pm @ ...
Organization: Mighty Movement
Date of Race: 07-06-2026
Description: LOUISVILLE'S BEST ACTIVE SUMMER CAMP: Get Outside, Work Hard, Have Fun! ...
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Week 09 | Ages 8-11 | 10am-2pm @ ...
Organization: Mighty Movement
Date of Race: 07-27-2026
Description: LOUISVILLE'S BEST ACTIVE SUMMER CAMP: Get Outside, Work Hard, Have Fun! ...
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<< SELECT SESSION
Organization: Mighty Movement
Date of Race: 07-13-2026
Description: LOUISVILLE'S BEST ACTIVE SUMMER CAMP: Get Outside, Work Hard, Have Fun! ...
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Organization: Mighty Movement
Date of Race: 08-10-2026
Description: LOUISVILLE'S BEST ACTIVE SUMMER CAMP: Get Outside, Work Hard, Have Fun! ...
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Organization: Mighty Movement
Date of Race: 06-22-2026
Description: LOUISVILLE'S BEST ACTIVE SUMMER CAMP: Get Outside, Work Hard, Have Fun! ...
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<< SELECT SESSION
Organization: Mighty Movement
Date of Race: 06-08-2026
Description: LOUISVILLE'S BEST ACTIVE SUMMER CAMP: Get Outside, Work Hard, Have Fun! ...
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<< SELECT SESSION
Organization: Mighty Movement
Date of Race: 07-27-2026
Description: LOUISVILLE'S BEST ACTIVE SUMMER CAMP: Get Outside, Work Hard, Have Fun! ...
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Complete list of running events in and near Boulder, CO: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Boulder
About Boulder
Boulder (CO) is a city in Boulder County with an estimated population of 97,385.[4]
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Did you know?
In 2014, there were more than 1,100 marathons and more than 541,000 finishers in the U.S.
