Running Races in 80241 (Thornton, CO)
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more in or near 80241
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.
2026 Eerie Erie
Organization: Optimist Club of Erie, Colorado
Date of Race: 10-31-2026
Description: The world-famous Eerie Erie is a Halloweenthemed 5k and ...
View Race Details View on Map
Bergen Peak Half Marathon Trail Race - 8/22/26
Organization: Evergreen Park & Recreation District
Date of Race: 08-22-2026
Description: DescriptionCome run with us in beautiful Evergreen to the top of ...
View Race Details View on Map
16 and under 10K - Individual Age group/open
Organization: Optimist Club of Erie, Colorado
Date of Race: 10-31-2026
Description: The world-famous Eerie Erie is a Halloweenthemed 5k and ...
View Race Details View on Map
Senior (60+) 10K - Individual Age group/open
Organization: Optimist Club of Erie, Colorado
Date of Race: 10-31-2026
Description: The world-famous Eerie Erie is a Halloweenthemed 5k and ...
View Race Details View on Map
16 and under 5K - Individual Age group/open
Organization: Optimist Club of Erie, Colorado
Date of Race: 10-31-2026
Description: The world-famous Eerie Erie is a Halloweenthemed 5k and ...
View Race Details View on Map
Adult (17+) 5K - Individual Age group/open
Organization: Optimist Club of Erie, Colorado
Date of Race: 10-31-2026
Description: The world-famous Eerie Erie is a Halloweenthemed 5k and ...
View Race Details View on Map
Senior (60+) 5K - Individual Age group/open
Organization: Optimist Club of Erie, Colorado
Date of Race: 10-31-2026
Description: The world-famous Eerie Erie is a Halloweenthemed 5k and ...
View Race Details View on Map
Adult (17+) 10K - Individual Age group/open
Organization: Optimist Club of Erie, Colorado
Date of Race: 10-31-2026
Description: The world-famous Eerie Erie is a Halloweenthemed 5k and ...
View Race Details View on Map
Friendsgiving
Organization: Commerce City Recreation Department
Date of Race: 11-19-2026
Description: DescriptionJoin us for a Friendsgiving Potluck! Bring your favorite holiday dish ...
View Race Details View on Map
Puzzling Competition
Organization: Commerce City Recreation Department
Date of Race: 08-27-2026
Description: DescriptionPut your problem-solving skills to the test in this exciting puzzlingcompetition! ...
View Race Details View on Map
Lucky Day Out: Casino Excursion
Organization: Evergreen Park & Recreation District
Date of Race: 08-20-2026
Description: DescriptionFeeling Lucky this summer? Finding yourself in the mood for ...
View Race Details View on Map
Mack Cross Country Team with Coach Mike
Organization: Mackintosh Academy Boulder
Date of Race: 08-25-2026
Description: Join our Mack Cross Country Team for the Fall season! Practices ...
View Race Details View on Map
Fitness Walk
Organization: Heather Gardens Association
Date of Race: 09-15-2026
Description: DescriptionFitness Walk Registration FREE. Start the Day with a ...
View Race Details View on Map
Bergen Peak 5k Trail Race - 8/22/26
Organization: Evergreen Park & Recreation District
Date of Race: 08-22-2026
Description: DescriptionCome run with us in beautiful Evergreen to the top of ...
View Race Details View on Map
Turkey Burn
Organization: Fort Lupton Recreation Center
Date of Race: 11-26-2026
Description: DescriptionStart your Thanksgiving the right Way! Join us for a ...
View Race Details View on Map
Ageless Athletes Summit
Organization: Evergreen Park & Recreation District
Date of Race: 10-03-2026
Description: DescriptionCelebrate Strength. Embrace Adventure. Defy Expectations.Age is just a number, and ...
View Race Details View on Map
Giants of the Plains Nature Walk
Organization: Commerce City Recreation Department
Date of Race: 11-15-2026
Description: Description
View Race Details View on Map
Wildland Firefighter Safety
Organization: Commerce City Recreation Department
Date of Race: 09-09-2026
Description: Description
View Race Details View on Map
Walk to End Alzheimer's (9/19)
Organization: Commerce City Recreation Department
Date of Race: 09-19-2026
Description: DescriptionLace up and take steps toward a world without Alzheimer's! This ...
View Race Details View on Map
Run with the Buffalo Fun Run: 5K Distance
Organization: Commerce City Recreation Department
Date of Race: 12-05-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
View Race Details View on Map
Run with the Buffalo Fun Run: 2.5 Mile ...
Organization: Commerce City Recreation Department
Date of Race: 12-05-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
View Race Details View on Map
Price
Organization: Valor Christian High School
Date of Race: 08-18-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
View Race Details View on Map
2026 Fall Cheer - Valor Mini Cheer Clinic
Organization: Valor Christian High School
Date of Race: 08-18-2026
Description: Please join us for our annual Valor Mini Cheer camp the ...
View Race Details View on Map
<< SELECT SESSION
Organization: Mighty Movement
Date of Race: 08-17-2026
Description: Please join us for our annual Valor Mini Cheer camp the ...
View Race Details View on Map
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 80241
About Thornton
The ZIP Code 80241 is associated with the city of Thornton in Adams County in the state of Colorado.
Races Local Newsletter
Subscribe to get the latest on racing delivered to your inbox, once per week.
Did you know?
In 2015, the 5K maintained the #1 position of all race distances with 7.6 million finishers (U.S.).
