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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.

Latest Past Events

Last Call Sprint

Boyd Lake Loveland

Yes! I want ONE MORE adventure!! Escape to the lake! The Last Call Triathlon will be an event you’ll look forward to all season long. Why? Beautiful mountain views, greatRead More

TriBella Womens Sprint

Cherry Creek State Park 4201 S Parker Rd, Aurora

The TriBella Women's Triathlon, presented by Coeur Sports, is the perfect all women's triathlon for first time triathletes looking to try the sport out, or seasoned veterans looking for a funRead More

Oktoberfest Sprint

Union Reservoir Longmont

The annual Oktoberfest Triathlon on September 19th, 2021,  is the party of the season and also a 2021 Mountain Collegiate Conference Race!  As the leaves change color this race will officially end the Colorado Triathlon Season!Read More