Race Calendar in Colorado, United States

Heart Throb 5k

Arvada, Colorado, United States

13 Feb, 2027 (Sat)

$30.00

Running

5K

Highlands Ranch 5k

Highlands Ranch, Colorado, United States

28 Feb, 2027 (Sun)

$38.00

Running

5K

Team CKF Running Series

Aspen, Colorado, United States

07 Mar, 2027 (Sun)

22nd Annual Run Through Time Trail Marathon and Half Marathon

Salida, Colorado, United States

13 Mar, 2027 (Sat)

Trail running, Running

Marathon Half-Marathon 3.2K

Erin Go Bragh 7.77k

Westminster, Colorado, United States

13 Mar, 2027 (Sat)

$38.00

Running

7.8K

All-Out Spring Fever

Golden, Colorado, United States

21 Mar, 2027 (Sun)

$20.00 - $65.00

Running

Half-Marathon 10K 5K +2

Central Park 5k

Denver, Colorado, United States

28 Mar, 2027 (Sun)

$25.00

Running

5K

Donut Dash

Denver, Colorado, United States

04 Apr, 2027 (Sun)

$30.00

Running

5K

Platte River Half-Marathon, Relay & 5k

Littleton, Colorado, United States

07 Apr, 2027 (Wed) – 11 Apr, 2027

Running

Half-Marathon 5K

NoCo Urban Ultra & Relay

Bellvue, Colorado, United States

11 Apr, 2027 (Sun)

$105.00 - $150.00

Trail running

Ultra

All-Out Beat the Heat

Westminster, Colorado, United States

24 Apr, 2027 (Sat)

$20.00 - $65.00

Running

Half-Marathon 10K 5K +2

Unicorn 5k (Denver-East)

Denver, Colorado, United States

25 Apr, 2027 (Sun)

$13.00 - $31.00

Running

5K 3.2K