RMRR September 5k/10k
- Date Sun 13th September 2026
- Time 8:00AM MDT
- Location Thornton, Colorado
- Races 2 races
- Distances 10km, 5km
Event summary
Join the excitement at the RMRR September 5k/10k event on Sunday, September 13, 2026, at the beautiful Platte River Trailhead Park in Thornton, Colorado! This lively monthly Trophy Series, hosted by the Rocky Mountain Road Runners, offers a welcoming and inclusive atmosphere for runners of all experience levels.
Get ready to challenge yourself with either a 10k or a 5k race, both set on a flat, scenic out-and-back bike path. The 10k race features a unique handicap start system, where participants begin from slow to fast over a span of approximately 30 minutes, giving everyone a fair chance to cross the finish line first. The 5k runners will start about 15 minutes after the 10k racers, ensuring a fantastic race day experience for all. Registration begins at 8:00 a.m. for the 10k, followed by the 5k, so be sure to arrive early to collect your race tag and warm up. With ample parking available at the park, you can focus on what really matters—enjoying a great day of racing in the heart of Colorado!
Get ready to challenge yourself with either a 10k or a 5k race, both set on a flat, scenic out-and-back bike path. The 10k race features a unique handicap start system, where participants begin from slow to fast over a span of approximately 30 minutes, giving everyone a fair chance to cross the finish line first. The 5k runners will start about 15 minutes after the 10k racers, ensuring a fantastic race day experience for all. Registration begins at 8:00 a.m. for the 10k, followed by the 5k, so be sure to arrive early to collect your race tag and warm up. With ample parking available at the park, you can focus on what really matters—enjoying a great day of racing in the heart of Colorado!
Organiser's Description
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 handicap.*
5k starts approximately 15min after the first 10k starter.
Show up 30 minutes early to get your tag and warm up.
Location: Platte River Trailhead Park, 88th & Colorado, Thornton, CO, 80229
COURSE: Both distances are out-and-back on a flat bike path.
PARKING: Plenty of parking at the park.
* The Trophy Series races use a unique, handicap start and scoring system. 10k racers start from slow to fast giving everyone a chance to win. When you register and pick up your number, we'll help you choose an appropriate start time that fits your estimated time.
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 handicap.*
5k starts approximately 15min after the first 10k starter.
Show up 30 minutes early to get your tag and warm up.
Location: Platte River Trailhead Park, 88th & Colorado, Thornton, CO, 80229
COURSE: Both distances are out-and-back on a flat bike path.
PARKING: Plenty of parking at the park.
* The Trophy Series races use a unique, handicap start and scoring system. 10k racers start from slow to fast giving everyone a chance to win. When you register and pick up your number, we'll help you choose an appropriate start time that fits your estimated time.
Races
-
10k
Sun 13th September 2026 (8:00AM MDT)
CLOSED -
5k
Sun 13th September 2026 (8:15AM MDT)
CLOSED
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88th and Colorado, Thornton, 80229, CO, United States
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RMRR September 5k/10k
