The following is a brief description from the Old Man Winter Bike Rally & Run:
Bundle Up and get ready to run and/or ride Colorado’s best mixed terrain!
Riders can choose 50KM or 100KM of gravel, snow, climbs, and thrills. Runners can crush the 5K or 10KM course that provides the best of Lyons, CO – single track trails, red rock canyon, and gravel paths.
Please see the Old Man Winter Bike Rally & Run Event website for more.
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