RMRR provides full and half marathon training opportunities for runners of all abilities. RMRR’s Marathon Training Series provides 10mi/20km and 20mi/30km races that are low cost, friendly, supported, and officially timed. All you need to do is focus on your running! The MTS fits well into training schedules for Colorado Springs, Boulderthon, Long View, Chicago, Monumental (Indy), New York, and other fall full and half marathons. Everyone is welcome to Marathon Training Series races: RMRR members, guests, training team members, everyone! The courses are well marked, with mile markers will help you gauge your time. We’ll time your run, and winners of each distance will receive ribbons. We make it easy for you to work on your pace, your nutrition and drinking, and getting everything ready for your big race. Please note that for everyone's safety dogs or running strollers are not permitted on our courses. Thanks for understanding. The races begin at 7 am at Riverdale Ballfields at 9830 Riverdale Road in Thornton Colorado. #1: Aug 25 - 10mi & 20mi #2: Sep 8 - 20k & 30k #3: Sep 22 - 10mi & 20mi You are welcome to run 15mi, 25k, or another distance. Just let us know at the start. RMRR Members receive a $5 discount off individual races and $15 off the 3-race bundles. Discount taken when you check out. Your membership must be current.
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 Fall Marathon Training Series #2 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
When is RMRR Fall Marathon Training Series #2 2026 — Thornton, CO?
RMRR Fall Marathon Training Series #2 2026 — Thornton, CO takes place on September 13, 2026. The race is held in Thornton, Colorado.
Where is RMRR Fall Marathon Training Series #2 2026 — Thornton, CO held?
RMRR Fall Marathon Training Series #2 2026 — Thornton, CO is held at Riverdale Ballfields in Thornton in Thornton, Colorado.
Where can I find hotels near RMRR Fall Marathon Training Series #2 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.
