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.
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
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
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
Run with the Buffalo Fun Run: 2.5 Mile ...
Organization: Commerce City Recreation Department
Date of Race: 12-05-2026
Description: DescriptionJoin us for our annual Run with the Buffalo Ugly ...
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: DescriptionJoin us for our annual Run with the Buffalo ...
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
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
Bright Nights at Four Mile Historic Park
Organization: Fort Lupton Recreation Center
Date of Race: 10-28-2026
Description: Age GroupSeniors
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
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
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
Valor Cheer Special Needs Clinic
Organization: Valor Christian High School
Date of Race: 09-28-2026
Description: Please join us for our annual Valor Special Needs Cheer camp ...
View Race Details View on Map
Price
Organization: Valor Christian High School
Date of Race: 09-28-2026
Description: Please join us for our annual Valor Special Needs Cheer camp ...
View Race Details View on Map
FIT: Run Lab @ Wash Park
Organization: City and County of Denver
Date of Race: 09-24-2026
Description: DescriptionBuild speed, endurance, resilience, and running efficiency outdoors in every ...
View Race Details View on Map
Dinner out – Cherry Cricket (11/30)
Organization: Commerce City Recreation Department
Date of Race: 11-30-2026
Description: Description Long-running hub with build-your-own burgers among other American staples & ...
View Race Details View on Map
Dinner out – Cherry Cricket (11/30)
Organization: Commerce City Recreation Department
Date of Race: 11-30-2026
Description: Description Long-running hub with build-your-own burgers among other American staples & ...
View Race Details View on Map
Dinner out – Cherry Cricket (11/30)
Organization: Commerce City Recreation Department
Date of Race: 11-30-2026
Description: Description Long-running hub with build-your-own burgers among other American staples & ...
View Race Details View on Map
Soccer Tots by SuperTots Sports 3yrs 7m to ...
Organization: Commerce City Recreation Department
Date of Race: 10-05-2026
Description: DescriptionSoccerTots is our flagship program! Our classes ...
View Race Details View on Map
Soccer Tots by SuperTots Sports 3yrs 7m to ...
Organization: Commerce City Recreation Department
Date of Race: 09-10-2026
Description: DescriptionSoccerTots is our flagship program! Our classes ...
View Race Details View on Map
Soccer Tots by SuperTots Sports 2yrs to 2yrs ...
Organization: Commerce City Recreation Department
Date of Race: 11-13-2026
Description: DescriptionSoccerTots is our flagship program! Our classes ...
View Race Details View on Map
Soccer Tots by SuperTots Sports 2yrs 7m to ...
Organization: Commerce City Recreation Department
Date of Race: 10-05-2026
Description: DescriptionSoccerTots is our flagship program! Our classes ...
View Race Details View on Map
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]
Races Local Newsletter
Subscribe to get the latest on racing delivered to your inbox, once per week.
Did you know?
Historically, more marathons are run in the month of October than any other month (in the U.S.).
