Race Calendar in Colorado, United States

Oct

11

Edt XC Showdown

Aurora, Colorado, United States

$25.00

Running

3K 4K 2K +1

Oct

11

Durango Marathon

Durango, Colorado, United States

$40.00 - $165.00

Running

Marathon Half-Marathon 5K

Oct

11

Your Story Isn't Over 5k/10k/Kids 1-Mile

Littleton, Colorado, United States

$25.00 - $45.00

Running

1.6K 10K 5K

Oct

11

Cerox Championships - Iron + Iron X

Frederick, Colorado, United States

Running

Cerox Iron Individual Cerox Iron Teams of 2 Cerox Iron X Individual Cerox Iron X Teams of 2

Oct

11

Kitty Beanz Cat 5k

Aurora, Colorado, United States

$45.00

Running

5K

Oct

11

The Moony Pride 5k

Fort Collins, Colorado, United States

Free

Running

5K

Oct

11

Westy Half & 5k

Westminster, Colorado, United States

$60.00 - $85.00

Running

Half-Marathon 5K

Oct

16

Whistle Pig Invitational

Craig, Colorado, United States

Free

Running

5K

Oct

16

Eric Wolff Invitational

Monte Vista, Colorado, United States

$25.00

Running

3K 5K

Oct

17

Indian Creek Trail Runs

Sedalia, Colorado, United States

$60.00 - $170.00

Trail running

8.9K 24.1K Ultra

Oct

17

Witch Paddle

Littleton, Colorado, United States

$75.00

Paddle sports

2026 Witch Paddle

Oct

17

The Great Trailhead Foot Race 5 & 10 Miler

Lakewood, Colorado, United States

$75.00 - $80.00

Running

8K 16.1K