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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

All Day

Frostbite Time Trial

Photos - Brent Murphy Photo   The first race on the local USAC  calendar will again be the Frostbite Time Trial here in Northern Colorado.  Racers should be ready for just about any type of weather conditions for this event,Read More

Gravelanche Series Ride #1: Dirt & Doughnuts

Sports Garage Cycling 2705 Spruce St, Boulder

Boulder   Gravelanche returns on Saturday, March 3! We're rolling out for 90 - 120 minutes of glorious gravel at the second annual Dirt & Doughnuts ride, the first in our annual spring gravel series. This year we're raising the stakesRead More

Mineral Belt Mayhem

Cycles of Life Bicycles 309 Harrison Ave, Leadville

Leadville   An 11 mile loop on Leadville’s beautiful Mineral Belt Trail and some singletrack to boot at Night! Start and finish on Harrison Ave. during Leadville’s Crystal Carnival Weekend. 4pm Register/Check In @ Cycles of Life, 309 Harrison Ave.,Read More