Colorado · 10K · 5K
RMRR September 5k/10k
RMRR September 5k/10k is a 10K and 5K event held in Thornton, Colorado. It was last held on September 13, 2026 and is usually run in September; the next date hasn't been announced yet.
- Usually held
- September
- Location
- Thornton, CO
Race details
- Last held
- September 13, 2026
- Usually held in
- September
- Location
- Thornton, Colorado
- Distances
- 10K, 5K
- Registration
- runsignup.com
- Official website
- rmrr.org
About the RMRR September 5k/10k
Rocky Mountain Road Runners holds a monthly Trophy Series in the Denver area. We provide a low-key, low-cost racing environment. Everyone is welcome to run with us! The 10km race uses a handicap start system, slow-to-fast, spread over ~30 minutes. This gives everyone a chance to win. We'll use your estimated finish time to assign you a start time with others the same speed. All 5k racers will start ~15min after the first 10km starters. Race Day Details Time : 10k starts at 8:00 am + your ha…
More 10Ks in Colorado
Coming up next, by confirmed date.
-
City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)Denver, CO5K10K ~2,743 runners
More races in Thornton
More upcoming races in Colorado
Keep exploring
- All races in Colorado
- 5Ks in Colorado 129 upcoming races
- 10Ks in Colorado 75 upcoming races
- Half Marathons in Colorado 55 upcoming races
- Marathons in Colorado 15 upcoming races
- 5Ks in the United States 6,420 upcoming races
- 10Ks in the United States 2,756 upcoming races
- September races in Colorado
- 10Ks in Oklahoma 43 upcoming races
- 10Ks in Utah 35 upcoming races
- 10Ks in Kansas 31 upcoming races
- 10Ks in Nebraska 28 upcoming races
Guides from the RaceRove blog
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 8 min read How to Choose the Best Half Marathon for a PR, Racecation or 50-State Challenge The best half marathon depends on what you want from it. How to choose a course for a personal record, a race worth travelling for, or an efficient stop on a 50-state challenge.
- 4 min read Diplo's Run Club 2026-27: Every City, Date and Course Diplo's Run Club is a 5K with a post-race concert. Every US date for 2026-27 (San Francisco, New York, Los Angeles, San Diego and Phoenix), start times and courses.
- Blog All guides Planning advice for finding, choosing and travelling to races.
RMRR September 5k/10k: common questions
- When is the RMRR September 5k/10k?
- The next date hasn't been announced in the listing yet. The race is usually held in September. Check the organiser's website for the official date.
- Where is the RMRR September 5k/10k held?
- In Thornton, Colorado.
- What distances does the RMRR September 5k/10k offer?
- 10K and 5K.
- How do I register for the RMRR September 5k/10k?
- Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.