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.
Run with the Buffalo Fun Run: 5K Distance
Organization: Commerce City Recreation Department
Date of Race: 12-06-2025
Description: DescriptionJoin us for our annual Run with the Buffalo ...
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Run with the Buffalo Fun Run: 2.5 Mile ...
Organization: Commerce City Recreation Department
Date of Race: 12-06-2025
Description: DescriptionJoin us for our annual Run with the Buffalo Ugly ...
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Denver Stock Show Excursion
Organization: Evergreen Park & Recreation District
Date of Race: 01-23-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Price
Organization: Valor Christian High School
Date of Race: 11-10-2025
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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2025 Valor Wrestling
Organization: Valor Christian High School
Date of Race: 11-10-2025
Description: This program is our primary season with a combination of Novice ...
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'26 Spring Early Ball Skills (2.5-3 year olds)
Organization: Altitude All Sports
Date of Race: 04-06-2026
Description: This 7-week program (Mondays, 4/6 to 5/18) provides little ones and ...
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Run with the Buffalo Fun Run: 2.5 Mile ...
Organization: Commerce City Recreation Department
Date of Race: 12-06-2025
Description: DescriptionJoin us for our annual Run with the Buffalo Ugly ...
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Run with the Buffalo Fun Run: 2.5 Mile ...
Organization: Commerce City Recreation Department
Date of Race: 12-06-2025
Description: DescriptionJoin us for our annual Run with the Buffalo Ugly ...
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Run with the Buffalo Fun Run: 5K Distance
Organization: Commerce City Recreation Department
Date of Race: 12-06-2025
Description: DescriptionJoin us for our annual Run with the Buffalo ...
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Run with the Buffalo Fun Run: 5K Distance
Organization: Commerce City Recreation Department
Date of Race: 12-06-2025
Description: DescriptionJoin us for our annual Run with the Buffalo ...
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Youth Basketball League-Grade 5-6 (Girls)
Organization: Commerce City Recreation Department
Date of Race: 01-10-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Youth Basketball League-Grade 5-6 (Girls)
Organization: Commerce City Recreation Department
Date of Race: 01-10-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Youth Basketball League-Grade 5-6 (Girls)
Organization: Commerce City Recreation Department
Date of Race: 01-10-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Youth Basketball League-Grade 5-6 (Boys)
Organization: Commerce City Recreation Department
Date of Race: 01-05-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Youth Basketball League -Grade 3-4 (Girls)
Organization: Commerce City Recreation Department
Date of Race: 01-10-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Youth Basketball League -Grade 3-4 (Boys)
Organization: Commerce City Recreation Department
Date of Race: 01-10-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Youth Basketball League-Grade 5-6 (Boys)
Organization: Commerce City Recreation Department
Date of Race: 01-05-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Youth Basketball League -Grade 3-4 (Boys)
Organization: Commerce City Recreation Department
Date of Race: 01-10-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Youth Basketball League -Grade 3-4 (Boys)
Organization: Commerce City Recreation Department
Date of Race: 01-10-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Youth Basketball League -Grade 3-4 (Girls)
Organization: Commerce City Recreation Department
Date of Race: 01-10-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Youth Basketball League-Grade 5-6 (Boys)
Organization: Commerce City Recreation Department
Date of Race: 01-05-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Youth Basketball League -Grade 3-4 (Girls)
Organization: Commerce City Recreation Department
Date of Race: 01-10-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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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?
Historically, more marathons are run in the month of October than any other month (in the U.S.).
