Running races in or near Longmont, CO
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Longmont, 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.
24 Hour - Individual Age group/open
Organization: Gnar Runners 2015
Date of Race: 11-01-2025
Description: Welcome to the Colorado 24 Hour Run! We aim to provide ...
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12 Hour - Individual Age group/open
Organization: Gnar Runners 2015
Date of Race: 11-01-2025
Description: Welcome to the Colorado 24 Hour Run! We aim to provide ...
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6 Hour - Individual Age group/open
Organization: Gnar Runners 2015
Date of Race: 11-01-2025
Description: Welcome to the Colorado 24 Hour Run! We aim to provide ...
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Colorado 24 Hour Run
Organization: Gnar Runners 2015
Date of Race: 11-01-2025
Description: Welcome to the Colorado 24 Hour Run! We aim to provide ...
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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 (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 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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Complete list of running events in and near Longmont, CO: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Longmont
About Longmont
Longmont (CO) is a city in Boulder County with an estimated population of 86,270.[4]
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Did you know?
The number of U.S. marathon finishers declined from 2014 to 2015 approximately 8 percent.
