Running races in or near Fort Collins, CO
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Fort Collins, 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: 05-03-2025
Description: All participants are welcome. Come challenge yourself to be the best.
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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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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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Running-5K - Individual Age group/open
Organization: Gnar Runners 2015
Date of Race: 12-31-2025
Description: Run out the old year, and welcome the new! Now in ...
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Running-25mi - Individual Age group/open
Organization: Gnar Runners 2015
Date of Race: 05-10-2025
Description: Welcome to the Quad Rock 25 50 mile trail race, ...
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Resolution Run 5K
Organization: Gnar Runners 2015
Date of Race: 12-31-2025
Description: Run out the old year, and welcome the new! Now in ...
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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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Running-Half marathon - Individual Age group/open
Organization: Gnar Runners 2015
Date of Race: 09-06-2025
Description: The Black Squirrel Trail Half Marathon takes place on the wonderful ...
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Blue Sky Marathon & Half
Organization: Gnar Runners 2015
Date of Race: 10-18-2025
Description: Taking place on the trails between Horsetooth Mountain Park and the ...
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Running-Half marathon - Individual Age group/open
Organization: Gnar Runners 2015
Date of Race: 04-13-2025
Description: Welcome to the 52nd running of the Horsetooth Half Marathon. Your ...
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Quad Rock 50/25mi
Organization: Gnar Runners 2015
Date of Race: 05-10-2025
Description: Welcome to the Quad Rock 25 50 mile trail race, ...
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Running-Half marathon - Individual Age group/open
Organization: Gnar Runners 2015
Date of Race: 10-18-2025
Description: Taking place on the trails between Horsetooth Mountain Park and the ...
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Running-50 Mile - Individual Age group/open
Organization: Gnar Runners 2015
Date of Race: 05-10-2025
Description: Welcome to the Quad Rock 25 50 mile trail race, ...
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Red Feather Trail Jamboree
Organization: Gnar Runners 2015
Date of Race: 09-26-2025
Description: Come enjoy the clean air and wild spaces of the Red ...
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Running-Trail-Marathon - Individual Age group/open
Organization: Gnar Runners 2015
Date of Race: 10-18-2025
Description: Taking place on the trails between Horsetooth Mountain Park and the ...
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Half Marathon - Individual Age group/open
Organization: Gnar Runners 2015
Date of Race: 09-26-2025
Description: Come enjoy the clean air and wild spaces of the Red ...
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Horsetooth Half Marathon
Organization: Gnar Runners 2015
Date of Race: 04-13-2025
Description: Welcome to the 52nd running of the Horsetooth Half Marathon. Your ...
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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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50 Mile - Individual Age group/open
Organization: Gnar Runners 2015
Date of Race: 09-26-2025
Description: Come enjoy the clean air and wild spaces of the Red ...
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50K - Individual Age group/open
Organization: Gnar Runners 2015
Date of Race: 09-26-2025
Description: Come enjoy the clean air and wild spaces of the Red ...
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Black Squirrel Half Marathon
Organization: Gnar Runners 2015
Date of Race: 09-06-2025
Description: The Black Squirrel Trail Half Marathon takes place on the wonderful ...
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Complete list of running events in and near Fort Collins, CO: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Fort Collins
About Fort Collins
Fort Collins (CO) is a city in Larimer County with an estimated population of 143,986.[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.).
