RMRR Spring Marathon Training Series

The RMRR Spring Marathon Training Series offers a supportive environment for runners of all abilities, featuring low-cost, officially timed races. The series includes two main events: a 10-mile and a 20-mile race, designed to fit into training schedules for major spring marathons. Participants can expect well-marked courses, aid stations with refreshments, and awards for top finishers.

The series is open to everyone, including RMRR members and guests, with discounts available for members. The races take place at Platte River Trailhead Park in Thornton, Colorado, providing a scenic backdrop for training and competition. Visit the organization's website for the most recent information.