Running Race Calendar in Colorado, United States

Sep

19

Cerox + Iron + Iron X

Frederick, Colorado, United States

$45.00 - $55.00

Running

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

Sep

19

All-Out Fall Fest

Westminster, Colorado, United States

$35.00 - $80.00

Running

Half-Marathon 10K 5K +2

Sep

19

Denver: Walk With Autism and Resource Fair

Denver, Colorado, United States

$25.00

Running

5K

Sep

19

Lederhosen Race 2026

Red Feather Lakes, Colorado, United States

$35.00

Running

5.8K

Sep

19

Champions for Children 5K Run/Walk

Commerce City, Colorado, United States

Running

5K

Sep

20

Chile & Frijole Hot to Trot 5K & 10K

Pueblo, Colorado, United States

$35.00 - $40.00

Running

5K 10K

Sep

20

Fall Equinox

Fort Collins, Colorado, United States

$75.00 - $85.00

Running

Half-Marathon 8K

Sep

20

Farmers 5000

Wheat Ridge, Colorado, United States

$10.00 - $30.00

Running

5K +1

Sep

20

Connection 5k

Carbondale, Colorado, United States

$20.00

Running

5K

Sep

20

Expo Park XC Runs

Aurora, Colorado, United States

$24.00 - $30.00

Running

5K 2K 3K 4K +1

Sep

20

Pikes Peak Marathon

Manitou Springs, Colorado, United States

Free - $250.00

Running

Marathon

Sep

20

20th Annual Golden Gallop

Golden, Colorado, United States

$50.00 - $55.00

Running

5K 10K 20K