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.
Trail Race Training Series- Aug 18-Sept 10
Organization: Evergreen Park & Recreation District
Date of Race: 08-18-2025
Description: DescriptionJoin Coach Jay Steinberg for weekly training sessions to prepare for ...
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Muddy Dash - Exclusive VIP Registration - ...
Organization: Viral Run
Date of Race: 09-13-2025
Description: Muddy Dash is not your average mud run! Get ready for ...
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Bergen Peak Half Marathon Trail Race- Sept 13
Organization: Evergreen Park & Recreation District
Date of Race: 09-13-2025
Description: DescriptionBergen Peak runners will experience the rolling hills of Elk Meadow ...
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Muddy Dash | Denver
Organization: Viral Run
Date of Race: 09-13-2025
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: 09-13-2025
Description: Muddy Dash is not your average mud run! Get ready for ...
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Coach Mike's Running Club with Mike Holloway - ...
Organization: Mack Boulder
Date of Race: 08-25-2025
Description: Come join me for some after school movement! This K-5 running ...
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Bergen Peak 5k Trail Race- Sept 13
Organization: Evergreen Park & Recreation District
Date of Race: 09-13-2025
Description: DescriptionThis 5K race leads runners throughout the rolling hills of Elk ...
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Staunton State Park 10 Mile Trail Race- Aug ...
Organization: Evergreen Park & Recreation District
Date of Race: 08-02-2025
Description: DescriptionJoin us at Staunton State Park for a beautiful 10 mile ...
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Half marathon - Individual Age group/open
Organization: Five Star NTP
Date of Race: 08-03-2025
Description: Have you been dreaming of running Boston? Need to shave a ...
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Marathon - Individual Age group/open
Organization: Five Star NTP
Date of Race: 08-03-2025
Description: Have you been dreaming of running Boston? Need to shave a ...
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I'm Bound for Boston Marathon & Half Marathon ...
Organization: Five Star NTP
Date of Race: 08-03-2025
Description: Have you been dreaming of running Boston? Need to shave a ...
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Cross Country Middle School Team
Organization: Mack Boulder
Date of Race: 08-26-2025
Description: Join our Mackintosh Academy Cross Country Team! We will practice twice ...
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2025 Fall Cheer - Valor Mini Cheer Clinic
Organization: Valor Christian High School
Date of Race: 09-16-2025
Description: Please join us for our annual Valor Mini Cheer camp the ...
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Price
Organization: Valor Christian High School
Date of Race: 09-16-2025
Description: Please join us for our annual Valor Mini Cheer camp the ...
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<< SELECT SESSION
Organization: Mighty Movement
Date of Race: 08-04-2025
Description: Please join us for our annual Valor Mini Cheer camp the ...
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<< SELECT SESSION
Organization: Mighty Movement
Date of Race: 08-04-2025
Description: Please join us for our annual Valor Mini Cheer camp the ...
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<< SELECT SESSION
Organization: Mighty Movement
Date of Race: 08-11-2025
Description: Please join us for our annual Valor Mini Cheer camp the ...
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<< SELECT SESSION
Organization: Mighty Movement
Date of Race: 08-04-2025
Description: Please join us for our annual Valor Mini Cheer camp the ...
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<< SELECT SESSION
Organization: Mighty Movement
Date of Race: 08-11-2025
Description: Please join us for our annual Valor Mini Cheer camp the ...
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U16 Dryland- ATC + Field Workouts
Organization: Lake Eldora Racing
Date of Race: 08-18-2025
Description: Dryland Training August 19th - November 14th Tues. Thurs.
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U14 Dryland + Field Workouts
Organization: Lake Eldora Racing
Date of Race: 08-20-2025
Description: Dryland Training Tues. Thurs. Alpine Training Center, 4pm - ...
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Fall Dryland - ATC - Freestlye & Freeride
Organization: Lake Eldora Racing
Date of Race: 08-26-2025
Description: Stay in shape and improve your strength, improve your on snow ...
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Trail Race Training Series- Aug 18-Sept 10
Organization: Evergreen Park & Recreation District
Date of Race: 08-18-2025
Description: DescriptionJoin Coach Jay Steinberg for weekly training sessions to prepare for ...
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Trail Race Training Series- Aug 18-Sept 10
Organization: Evergreen Park & Recreation District
Date of Race: 08-18-2025
Description: DescriptionJoin Coach Jay Steinberg for weekly training sessions to prepare for ...
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Fall Dryland - Workouts in the park - ...
Organization: Lake Eldora Racing
Date of Race: 08-26-2025
Description: Stay in shape and improve your strength, stamina and balance to ...
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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?
In 2014, 57% of marathon finishers in the U.S. were men; women made up 43% of finishers.
