Running races in or near Johnstown, CO
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Johnstown, 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-5K - 15 And Under Youth
Organization: Turner Middle School
Date of Race: 05-02-2026
Description: All participants are welcome. Come challenge yourself to be the best.
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Running-5K - 16 and Older Adult Registration
Organization: Turner Middle School
Date of Race: 05-02-2026
Description: All participants are welcome. Come challenge yourself to be the best.
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22nd Annual Bob Turner Classic 5K Run/Walk
Organization: Turner Middle School
Date of Race: 05-02-2026
Description: All participants are welcome. Come challenge yourself to be the best.
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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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T-Ball M/W 5:00 pm
Organization: Thompson Rivers Parks and Recreation District
Date of Race: 06-01-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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T-Ball M/W 5:00 pm
Organization: Thompson Rivers Parks and Recreation District
Date of Race: 06-01-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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T-Ball M/W 5:00 pm
Organization: Thompson Rivers Parks and Recreation District
Date of Race: 06-01-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Complete list of running events in and near Johnstown, CO: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Johnstown
About Johnstown
Johnstown (CO) is a town in Weld County with an estimated population of 9,887.[4]
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Did you know?
The number of U.S. marathon finishers declined from 2014 to 2015 approximately 8 percent.
