Platte River TrailHead Park, Thornton CO
Sunday, April 13th, 2025
RMRR provides consistent and individualized marathon training opportunities for runners of all abilities.
Everyone is welcome to Marathon Training Series races: RMRR members, guests, training team members, everyone!
Please note that for everyone's safety dogs or running strollers are not permitted on our courses. Thanks for understanding.
The races begin at 8 am at the Platte River Trailhead Park in Thornton, at 88th and Colorado.
For more details, visit the official race page: RMRR Spring Marathon Training Series #3.
Starting Line Map
Suggested Races
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