RMRR September 5k/10k 2026 — Thornton, CO

Date
September 13, 2026
Location
Thornton, CO
Venue
9830 Riverdale Road
Start Time
8:00 AM
Entry Fee
$10.00 – $15.00
Events
10k, 5k
Register NowRegistration OpenOfficial Race Website

RMRR September 5K/10K is a running event held in Thornton, Colorado on September 13, 2026, offering both 5K and 10K distances. The race starts at 8:00 AM at 9830 Riverdale Road. Entry fees range from $10 to $15, making it an affordable option for runners looking to compete locally. Whether you're targeting a longer 10K effort or a shorter 5K effort, this event provides straightforward racing in the Denver metro area. Consider staying nearby in Thornton for easy morning logistics and post-race recovery time.

From the Race Organizer
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: Riverdale Ballfields, 9830 Riverdale Road, Thornton, Colorado, 80229 Course : Both distances are out-and-back on a mix of paved and smooth gravel. 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.

Hotels Near This Race

Find accommodation close to the start line in Thornton, CO. Sorted by distance from the race venue. Book early — race weekend hotels fill fast.

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RMRR September 5k/10k 2026 — Thornton, CO

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Race Travel Insurance

Don't forget travel insurance for September 13.

You've trained for months and booked a trip to Thornton, CO. A pre-race injury, a delayed flight, or a family emergency can derail the whole thing. Travel insurance can help cover your race entry fee, hotel, and flights if you can't make it, and may cover medical costs if something goes wrong on the course. Plans typically only run 5-7% of your total trip cost — and running events are covered under standard plans with no additional coverage needed.

  • Trip cancellation up to 100% of prepaid costs
  • Running events covered under standard plans — no add-ons needed
  • Trip interruption up to 150% of non-refundable costs
  • Emergency medical up to $250,000
  • Cancel For Any Reason add-on available
  • 24/7 real-time support
Get a Quote — Faye Travel Insurance

Affiliate links — we may earn a commission at no cost to you. Coverage terms vary by state and plan. Review policy details before purchase.

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Frequently Asked Questions

When is RMRR September 5k/10k 2026 — Thornton, CO?

RMRR September 5k/10k 2026 — Thornton, CO takes place on September 13, 2026. The race is held in Thornton, Colorado.

Where is RMRR September 5k/10k 2026 — Thornton, CO held?

RMRR September 5k/10k 2026 — Thornton, CO is held at 9830 Riverdale Road in Thornton, Colorado.

Where can I find hotels near RMRR September 5k/10k 2026 — Thornton, CO?

RaceHotelFinder shows hotels sorted by distance from the race venue in Thornton. Use the map or list view on this page to compare options and book race weekend accommodation.