Running Race Calendar in Colorado, United States

Pancake Stampede 5K

Littleton, Colorado, United States

09 Aug, 2026 (Sun)

$20.00

Running

5K

Summer Sizzler- Colorado Springs

Colorado Springs, Colorado, United States

09 Aug, 2026 (Sun)

$22.00 - $34.00

Running

1.6K 5K 10K 15K

Frontier Academy Community 5K

Greeley, Colorado, United States

15 Aug, 2026 (Sat)

$25.00

Running

5K

Run for PB& J 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

15 Aug, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Cwcs 5K Color Fun Run

Montrose, Colorado, United States

15 Aug, 2026 (Sat)

$40.00

Running

5K

Sunrise Stampede

Longmont, Colorado, United States

15 Aug, 2026 (Sat)

Free - $35.00

Running

5K 1.6K +1

Bagel Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

15 Aug, 2026 (Sat) – 10 Oct, 2026

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Miles for Migraine Colorado

Denver, Colorado, United States

15 Aug, 2026 (Sat)

Running

3.2K 5K

Cancer League of Colorado Race 4 Research

Denver, Colorado, United States

16 Aug, 2026 (Sun)

$40.00

Running

5K

Erie Half & 5k

Erie, Colorado, United States

16 Aug, 2026 (Sun)

$45.00 - $70.00

Running

Half-Marathon 5K

Flying Falcon Downhill Mile

Air Force Academy, Colorado, United States

16 Aug, 2026 (Sun)

$20.00

Running

1.6K

Staunton Rocks! Marathon and Half Marathon

Pine, Colorado, United States

22 Aug, 2026 (Sat)

$110.00 - $130.00

Running

Marathon Half-Marathon