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 / Walking Club
Organization: Westgate Community School
Date of Race: 04-16-2025
Description: Any fitness level welcome
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Running-5K - 15 And Under Youth
Organization: Turner Middle School
Date of Race: 05-03-2025
Description: All participants are welcome. Come challenge yourself to be the best.
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Bubble Run - Exclusive VIP Registration- Regular Price ...
Organization: Viral Run
Date of Race: 06-21-2025
Description: If you’ve done a traditional 5K, you know ...
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Price
Organization: Colorado Track & Cross Country Camps
Date of Race: 07-07-2025
Description: If you’ve done a traditional 5K, you know ...
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Elk Meadow 10k Trail Race- June 21
Organization: Evergreen Park & Recreation District
Date of Race: 06-21-2025
Description: DescriptionThis 10K race leads runners throughout the rolling hills of Elk ...
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Bergen Peak Half Marathon Trail Race- Sept 13
Organization: Evergreen Park & Recreation District
Date of Race: 09-13-2025
Description: DescriptionBergen Peak runners will experience the rolling hills of Elk Meadow ...
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Muddy Dash - VIP Registration 💎
Organization: Viral Run
Date of Race: 05-10-2025
Description: Muddy Dash is not your average mud run! Get ready for ...
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Colorado Cross Country Summer Camp
Organization: Colorado Track & Cross Country Camps
Date of Race: 07-07-2025
Description: Nestled 5,430 feet above sea level, Boulder, Colorado is renowned as ...
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Running-5K - 16 and Older Adult Registration
Organization: Turner Middle School
Date of Race: 05-03-2025
Description: All participants are welcome. Come challenge yourself to be the best.
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Muddy Dash - Value Registration
Organization: Viral Run
Date of Race: 05-10-2025
Description: Muddy Dash is not your average mud run! Get ready for ...
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Bubble Run - Value Registrations- Regular Price $54.95
Organization: Viral Run
Date of Race: 06-21-2025
Description: If you’ve done a traditional 5K, you know ...
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Muddy Dash | Denver
Organization: Viral Run
Date of Race: 05-10-2025
Description: Muddy Dash is not your average mud run! Get ready for ...
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21st Annual Bob Turner Classic 5k Run/Walk
Organization: Turner Middle School
Date of Race: 05-03-2025
Description: All participants are welcome. Come challenge yourself to be the best.
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Bubble Run | Denver
Organization: Viral Run
Date of Race: 06-21-2025
Description: If you’ve done a traditional 5K, you know ...
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Elk Meadow 5k Trail Race June 21
Organization: Evergreen Park & Recreation District
Date of Race: 06-21-2025
Description: DescriptionThis 5K race leads runners throughout the rolling hills of Elk ...
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Staunton State Park 10 Mile Trail Race- Aug ...
Organization: Evergreen Park & Recreation District
Date of Race: 08-02-2025
Description: DescriptionJoin us at Staunton State Park for a beautiful 10 mile ...
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EXPAND: Youth Track and Field
Organization: BOULDER PARKS & RECREATION (w)
Date of Race: 04-02-2025
Description: Description(Ages 6–14) Whether you want to run, throw or jump, there's ...
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Staunton State Park 6 Mile Trail Race- July ...
Organization: Evergreen Park & Recreation District
Date of Race: 07-12-2025
Description: DescriptionJoin us at Staunton State Park for a beautiful 6 mile ...
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Bergen Peak 5k Trail Race- Sept 13
Organization: Evergreen Park & Recreation District
Date of Race: 09-13-2025
Description: DescriptionThis 5K race leads runners throughout the rolling hills of Elk ...
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5k Race June
Organization: Fort Lupton Recreation Center
Date of Race: 06-14-2025
Description: DescriptionA certified 5k Race starts on South Harrison Avenue in front ...
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EXPAND: Special Olympics Track and Field
Organization: BOULDER PARKS & RECREATION (w)
Date of Race: 04-02-2025
Description: Description(Ages 6–14) Whether you want to run, throw or jump, there's ...
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2025 Wicked Wine Run Denver, CO
Organization: Wicked Wine Run
Date of Race: 05-10-2025
Description: Whether you’re a seasoned runner or just love to walk and ...
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EXPAND: 5k Club
Organization: BOULDER PARKS & RECREATION (w)
Date of Race: 04-03-2025
Description: Description(Ages 14+) It's a great time to enjoy the beautiful spring ...
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1K TASTING WALK - Individual
Organization: Wicked Wine Run
Date of Race: 05-10-2025
Description: Whether you’re a seasoned runner or just love to walk and ...
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Volunteer then Run! - Individual
Organization: Wicked Wine Run
Date of Race: 05-10-2025
Description: Whether you’re a seasoned runner or just love to walk and ...
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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?
There were at least 768 marathons scheduled in the United States and Canada in 2016.
