RMRR Spring Marathon Training Series #1
- Date Sun 29th March 2026 - Sat 11th April 2026
- Time 8:00AM MDT
- Location Thornton, Colorado
- Price $22.20 - $59.30
- Races 4 races
- Distances 10 Mile, Ultra
Event summary
Get ready to lace up your running shoes for the RMRR Spring Marathon Training Series #1, taking place from March 29 to April 11, 2026, in the scenic Thornton, Adams. This event is designed for runners of all levels looking to prepare for spring marathons such as Boston and Colfax. With two exciting race days, participants can choose from 10-mile or 20-mile distances on both March 29 and April 11, starting at 8 AM from the Platte River Trailhead Park at 88th and Colorado.
The RMRR Spring Marathon Training Series offers a supportive and low-cost environment, perfect for honing your pace, nutrition, and overall race strategy. Sign up for one event or take advantage of the two-race bundle for added savings. Plus, RMRR members enjoy a fantastic 50% discount! Remember, for safety reasons, dogs and running strollers are not allowed on the course. Join us for these fun and motivating training races to kick off your spring marathon season!
The RMRR Spring Marathon Training Series offers a supportive and low-cost environment, perfect for honing your pace, nutrition, and overall race strategy. Sign up for one event or take advantage of the two-race bundle for added savings. Plus, RMRR members enjoy a fantastic 50% discount! Remember, for safety reasons, dogs and running strollers are not allowed on the course. Join us for these fun and motivating training races to kick off your spring marathon season!
Organiser's Description
RMRR provides low-cost, low-keyed, supported, and timed training races for runners of all abilities. The races are planned to help you prepare for Boston, Colorado, Colfax, and other long spring races. We make it easy for you to work on your pace, your nutrition and drinking, and getting everything ready for your big race.
* 3/29/26 - 10mi & 20mi
* 4/11/26 - 10mi & 20mi
Sign up for one, or save money and choose the two race bundle. RMRR members get 50% off.
The races begin at 8am, at the Platte River Trailhead Park, at 88th and Colorado, in Thornton. The courses are out-n-back. so we can accommodate almost any distance between 10-20 miles.
Please note that for everyone's safety dogs or running strollers are not permitted on our courses. Thanks for understanding.
* 3/29/26 - 10mi & 20mi
* 4/11/26 - 10mi & 20mi
Sign up for one, or save money and choose the two race bundle. RMRR members get 50% off.
The races begin at 8am, at the Platte River Trailhead Park, at 88th and Colorado, in Thornton. The courses are out-n-back. so we can accommodate almost any distance between 10-20 miles.
Please note that for everyone's safety dogs or running strollers are not permitted on our courses. Thanks for understanding.
Races
-
10 Mile
Incl. $2.20 Fee
Sun 29th March 2026 (8:00AM MDT)
$22.20
This signup is for the single 10M race on Sunday, March 29th. Scroll down for the 2-race bundle. -
20mi
Incl. $2.80 Fee
Sun 29th March 2026 (8:00AM MDT)
$32.80
This signup is for the single 20 Mile race on Sunday, March 29th. Scroll down for the 2-race bundle. If your training schedule tells you to run a shorter distance like 15 or 18 miles, that's fine. Sign up for the 20mi. At the start, tell us how far you plan to run. -
Two-Race Bundle Short - 10mi
Incl. $3.10 Fee
Sun 29th March 2026 (8:00AM MDT)
$38.10
This is for two 10-mi races on 3/29 & 4/11 -
2-Race Bundle Long - 20mi
Incl. $4.30 Fee
Sun 29th March 2026 (8:00AM MDT)
$59.30
This is for two 20-mi races on 3/29 & 4/11.
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88th and Colorado, Thornton, 80229, CO, United States
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RMRR Spring Marathon Training Series #1
