Have an event to List?
Whether a race, special group ride, training opportunity, or cycling-related community event, the 303 calendar showcases it all. To have an event posted here please follow this link: Event Policy Submission & Guidelines.
Lyons Bundle up and get ready to RUN and/or RIDE Colorado’s best mixed terrain. Riders – choose 50km or 100km of dirt, snow, sweat, and beer rolling through the world-famous cycling mecca of Boulder County. Runners can crush the 5.4-mile run course, a fast, flat “Best of Lyons” tour, that integrates singletrack trails, red rock canyon, and gravel paths. Everybody gets luxury aid stations with real food and hydration, a hot meal and a cold beer at the finish…Find out more »