Running Races in 80226 (Denver, CO)

Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more in or near 80226

See below for a frequently-updated, comprehensive list of upcoming running events in the local Denver, 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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

Friendsgiving

Organization: Commerce City Recreation Department

Date of Race: 11-19-2026

Description: DescriptionJoin us for a Friendsgiving Potluck! Bring your favorite holiday dish ...

Giants of the Plains Nature Walk

Organization: Commerce City Recreation Department

Date of Race: 11-15-2026

Description: Description

Valor Distance Winter Youth Camp

Organization: Valor Christian High School

Date of Race: 12-07-2026

Description: Coach Coplen and his coaching staff will take all individuals through ...

Price

Organization: Valor Christian High School

Date of Race: 12-07-2026

Description: Coach Coplen and his coaching staff will take all individuals through ...

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 & ...

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 & ...

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 & ...