RMRR Spring Marathon Training Series #1

  • Date Sun 23rd March 2025
  • Time 8:00AM EST
  • Location Thornton, Colorado
  • Price $22.20 - $54.00
  • Races 4 races
  • Distances 10 Mile, Ultra

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Event summary

Get ready to lace up your running shoes for the RMRR Spring Marathon Training Series #1, taking place on Sunday, March 23, 2025, in beautiful Thornton, Adams! This exciting event offers a fantastic opportunity for runners of all abilities to prepare for upcoming spring marathons, including the prestigious Boston Marathon and the Colorado Colfax Marathon. Participants can choose to tackle either a 10-mile or a challenging 20-mile course, designed to help you refine your pace and nutrition strategies in a supportive environment.

The race kicks off at 8 AM at the Platte River Trailhead Park, conveniently located at 88th and Colorado in Thornton. With the courses set up as out-and-back routes, you can focus on your training while enjoying the scenic views. Sign up for this invigorating event individually or opt for a bundle to participate in multiple races throughout the series! Please remember that for everyoneโ€™s safety, dogs and running strollers are not permitted on the course. Join us for a fun day of running, camaraderie, and preparation for your big race!

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.

* 3/23 - 10mi & 20mi
* 4/13 - 10mi & 20mi

Sign up for one, or choose a two or three race bundle.

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 accomodate 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 23rd March 2025 (8:00AM EDT)

    $22.20

    This signup is for the single 10M race on Sunday March 23rd. Scroll down for the 2 race bundle.
  • 20mi

    Incl. $2.80 Fee

    Sun 23rd March 2025 (8:00AM EDT)

    $32.80

    This signup is for the single 20 Mile race on Sunday March 23rd. 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 20 and just tell us how far you plan to run. Let us know on race day so we know how to time you!
  • Two-Race Bundle Short - 10mi

    Incl. $2.80 Fee

    Sun 23rd March 2025 (8:00AM EDT)

    $32.80

    This is for two 10-mi races on 3/23 & 4/13
  • 2-Race Bundle Long - 20mi

    Incl. $4.00 Fee

    Sun 23rd March 2025 (8:00AM EDT)

    $54.00

    This is for two 20-mi races on 3/23 & 4/13.

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Location

Platte River TrailHead Park, 88th and Colorado, Thornton, 80229, CO, United States

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Mar 23, 2025

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