5K Races in Colorado
Colorado has 158 upcoming 5K races scheduled for 2026. The calendar runs year-round — busiest in August through October, quietest in March through May. Centennial is the busiest city with 32 races, ahead of Denver (19) and Colorado Springs (10).
5K races by month in Colorado
Sep (34) · Aug (33) · Oct (29) · Jul (20) · Nov (15) · Dec (8) · Feb (5) · Jan (4) · May (3) · Jun (3) · Mar (2) · Apr (2)
Showing 24 of 158
Running
Festival in the Clouds 5K
Alma, CO
Running
Festival in the Clouds 5K
July 18, 2026
Alma, CO
Running
2nd Annual Pancreatic Cancer Awareness in Honor of Diana Cantu - 5K Fun Run/Walk
July 25, 2026
Alamosa, CO
Running
Run for Donuts 5K/10K/13.1 DENVER/AURORA
Centennial, CO
Running
Run for Donuts 5K/10K/13.1 DENVER/AURORA
July 26, 2026
Centennial, CO
Running
Snowshoe Shuffle 5K Run
Creede, CO
Running
Snowshoe Shuffle 5K Run
August 1, 2026
Creede, CO
Top Cities for 5K Races in Colorado
Frequently asked questions
How long is a 5K race?▾
A 5K is 3.1 miles (5 kilometers). It is the most popular race distance in the US and a great starting point for new runners. RACE lists thousands of 5K events across all 50 states.
What is a good 5K time for beginners?▾
A good beginner 5K time is 30-35 minutes. Many first-time runners aim to complete the distance without stopping. The average US 5K finish time is around 28 minutes.
How do I find a 5K near me?▾
Use the RACE search bar to enter your zip code or state and filter by distance. You can also browse by month to find races that fit your schedule. Turkey Trots in November and charity 5Ks are especially popular.
How long does it take to train for a 5K?▾
Most couch-to-5K programs are 6-8 weeks long with 3 runs per week. If you can already jog for 10-15 minutes, you could be ready in 4-6 weeks with consistent training.