Running races in or near Westminster, CO
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Westminster, 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 ...
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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 ...
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Veteran's Day Event
Organization: Heather Gardens Association
Date of Race: 11-11-2026
Description: DescriptionCome run with us in beautiful Evergreen to the top of ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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! ...
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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 ...
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Turkey Burn
Organization: Fort Lupton Recreation Center
Date of Race: 11-26-2026
Description: DescriptionStart your Thanksgiving the right Way! Join us for a ...
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Friendsgiving
Organization: Commerce City Recreation Department
Date of Race: 11-19-2026
Description: DescriptionJoin us for a Friendsgiving Potluck! Bring your favorite holiday dish ...
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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 ...
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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 ...
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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 ...
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Giants of the Plains Nature Walk
Organization: Commerce City Recreation Department
Date of Race: 11-15-2026
Description: Description
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Middle School Cross Country - RMAE
Organization: Evergreen Park & Recreation District
Date of Race: 08-24-2026
Description: DescriptionFall 2026 JeffCo League MS Cross CountryAug 24 - Oct 14RMAE ...
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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 ...
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Wildland Firefighter Safety
Organization: Commerce City Recreation Department
Date of Race: 09-09-2026
Description: Description
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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 ...
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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 ...
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Price
Organization: Valor Christian High School
Date of Race: 08-18-2026
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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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 ...
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Week 11 | Ages 12-15 | 10am-2pm @ ...
Organization: Mighty Movement
Date of Race: 08-10-2026
Description: LOUISVILLE'S BEST ACTIVE SUMMER CAMP: Get Outside, Work Hard, Have Fun! ...
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Complete list of running events in and near Westminster, CO: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Westminster
About Westminster
Westminster (CO) is a city in Adams County with an estimated population of 106,114.[4]
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Did you know?
There were at least 768 marathons scheduled in the United States and Canada in 2016.
