Running Races in 80205 (Denver, CO)

Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more in or near 80205

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.

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 ...

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 ...

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 ...

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 ...

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 ...

Trail Race Training Series- July 13-July 30

Organization: Evergreen Park & Recreation District

Date of Race: 07-14-2025

Description: DescriptionJoin Coach Jay Steinberg for weekly training sessions to prepare for ...

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 ...

Muddy Dash | Denver

Organization: Viral Run

Date of Race: 09-13-2025

Description: Muddy Dash is not your average mud run! Get ready for ...

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 ...

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 ...

Breakfast & Four Mile Historic Park

Organization: Fort Lupton Recreation Center

Date of Race: 07-24-2025

Description: Age GroupSeniors

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 ...

Staunton State Park 6 Mile Trail Race- July ...

Organization: Evergreen Park & Recreation District

Date of Race: 07-12-2025

Description: DescriptionJoin us at Staunton State Park for a beautiful 6 mile ...