Running Race Calendar in Colorado, United States

Jun

20

Parker Parks and Recreation Dash Across the Dam Father’s Day 5K

Parker, Colorado, United States

Running

5K

Jun

20

Run Juneteenth Day 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +2

Jun

20

Sierra's 5K Run/Walk Race Against Meningitis

Loveland, Colorado, United States

Running

5K

Jun

20

Mustang Mile 2026

Kremmling, Colorado, United States

Running

1.6K

Jun

20

Sloth Run 5K/10K/13.1 Denver/Aurora

Centennial, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +8

Jun

20

Run for the River 5k Boulder

Boulder, Colorado, United States

Running

5K

Jun

19

HRCA Happy Hour Half K

Littleton, Colorado, United States

Running

0.5K

Jun

14

Garden of the Gods 10 Mile/10K and Trail Run

Colorado Springs, Colorado, United States

Running Trail running

16.1K 10K 4.7K

Jun

14

The Bullfrog Splashdown

Littleton, Colorado, United States

Running

10K 5K 2.4K 8.9K

Jun

14

Garden of the Gods Little Horn and Big Horn Kids Races

Colorado Springs, Colorado, United States

Running

Little Horns Race Big Horns Race

Jun

13

Hyrox Sim

Frederick, Colorado, United States

Running

Half Hyrox Sim Individual Half Hyrox Sim (Teams of 2) Full Hyrox Sim (Individual) Full Hyrox Sim (Teams of 2)

Jun

13

Stepping Stone 5K

Littleton, Colorado, United States

Running

5K 2.5K