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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


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All Day
1st Annual Winter Sports Festival
Mesa Winter Sports Festival provides the opportunity to demo the latest winter endurance sport gear and push yourselves with the races throughout the weekend, including cross country ski races, MADhorn Fat Bike Race, snowshoe 5k run race, and aRead More
Find out more »8:00 am
Staunton Fattie Frenzy: A fat bike celebration
Pine Join us for a celebration of front range fat biking featuring a fast-paced and spectator-friendly 8-lap circuit race. Racers can go solo or in teams of 2 or 4 on the 1.5 mile loop so gather your friends,Read More
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