5K Races in Colorado
Colorado has 157 upcoming 5K races scheduled for 2026. Most of the calendar falls in the warmer months: 105 of 157 races (67%) take place between May and September, with July (34 events) the busiest month. No single city dominates the calendar. Centennial leads with 29 races, followed by Denver (19), Colorado Springs (9), and Littleton (7). The remaining 59% of the calendar is spread across smaller cities.
5K races by month in Colorado
Jul (34) · Sep (27) · Oct (25) · Aug (24) · Jun (17) · Nov (13) · Dec (7) · May (3) · Feb (2) · Mar (2) · Apr (2) · Jan (1)
Showing 24 of 157
Running
Parker Parks and Recreation Dash Across the Dam Father’s Day 5K
June 20, 2026
Parker, CO
Running
2026 CANCELED-14th Annual Buffs4Life Kyle MacIntosh Memorial 5K Run/Walk
June 21, 2026
Boulder, CO
Running
VIRTUAL 14th Annual Buffs4Life Kyle MacIntosh Memorial 5K Run/Walk
June 21, 2026
Boulder, 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.