Running races in or near Thornton, CO
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Thornton, 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.
Colorado Cross Country Summer Camp
Organization: Colorado Track & Cross Country Camps
Date of Race: 07-06-2026
Description: Nestled 5,430 feet above sea level, Boulder, Colorado is renowned as ...
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Price
Organization: Colorado Track & Cross Country Camps
Date of Race: 07-06-2026
Description: Nestled 5,430 feet above sea level, Boulder, Colorado is renowned as ...
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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 | 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 - 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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5k Race : Summer Sizzle : June
Organization: Fort Lupton Recreation Center
Date of Race: 06-13-2026
Description: DescriptionA certified 5k Race starts on South Harrison Avenue in front ...
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2026 Wicked Wine Run Denver
Organization: Wicked Wine Run
Date of Race: 08-01-2026
Description: Whether you’re a seasoned runner or just love to walk and ...
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BOTH 5K + 1K! - Individual
Organization: Wicked Wine Run
Date of Race: 08-01-2026
Description: Whether you’re a seasoned runner or just love to walk and ...
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5K WICKED WINE RUN - Individual
Organization: Wicked Wine Run
Date of Race: 08-01-2026
Description: Whether you’re a seasoned runner or just love to walk and ...
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1K WINE WALK - Individual
Organization: Wicked Wine Run
Date of Race: 08-01-2026
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: 08-01-2026
Description: Whether you’re a seasoned runner or just love to walk and ...
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Price
Organization: Colorado Womens Basketball
Date of Race: 06-15-2026
Description: Whether you’re a seasoned runner or just love to walk and ...
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Lucky Day Out: Casino Excursion
Organization: Evergreen Park & Recreation District
Date of Race: 08-20-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Mackintosh Spring Track with Coach Mike
Organization: Mack Boulder
Date of Race: 03-24-2026
Description: Come join our first ever Mack Spring Track Team! We will ...
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Price
Organization: Colorado Womens Basketball
Date of Race: 06-15-2026
Description: Come join our first ever Mack Spring Track Team! We will ...
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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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Ranger Roundtable - River Run Park
Organization: Commerce City Recreation Department
Date of Race: 07-24-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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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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Price
Organization: Valor Christian High School
Date of Race: 03-23-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Price
Organization: Valor Christian High School
Date of Race: 03-23-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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VALOR CHRISTIAN PERFORMANCE ACADEMY SESSION 2 (MON ...
Organization: Valor Christian High School
Date of Race: 03-23-2026
Description: Valor Christian High School is excited to offer strength and conditioning ...
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VALOR CHRISTIAN PERFORMANCE ACADEMY SESSION 2 (TUES ...
Organization: Valor Christian High School
Date of Race: 03-23-2026
Description: Valor Christian High School is excited to offer strength and conditioning ...
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<< SELECT SESSION
Organization: Mighty Movement
Date of Race: 07-20-2026
Description: Valor Christian High School is excited to offer strength and conditioning ...
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<< SELECT SESSION
Organization: Mighty Movement
Date of Race: 07-27-2026
Description: Valor Christian High School is excited to offer strength and conditioning ...
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Complete list of running events in and near Thornton, CO: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Thornton
About Thornton
Thornton (CO) is a city in Adams County with an estimated population of 118,772.[4]
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Did you know?
The number of U.S. marathon finishers declined from 2014 to 2015 approximately 8 percent.
