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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

CANCELLED: Rocky Mountain Junior Cycling Challenge

June 21, 2017 From the Race Director: I am very sorry to announce that we are putting the Rocky Mountain Jr. Cycling Challenge on hold until 2018 for a myriad of reasons. Registration was about to open however personal circumstancesRead More

Tim Kalisch Memorial Grand Loop

CoorsTek Parking Lot 10th & Jackson, Golden

Date:  Saturday, July 8, 2017 Sign-in/Start Time: 2:15 am/3:00 am Start/End Location: Golden, Coors Tek Parking Lot Distance/climbing: 200 miles/15,500 feet Brief description:  The Tim Kalisch Memorial Grand Loop starts in Golden and passes through Boulder, Lyons, Estes Park, Granby,Read More

Tour de Ladies

Douglas County, Parker   Tour de Ladies is a fully supported, non-competitive, women-only cycling event through the rolling hills of Douglas County, south of Denver, starting in Parker.  With two route options, there is a ride for all cycling abilities.Read More

CANCELLED: Triple Bypass

Bergen Park Evergreen

    The Triple Bypass Bicycle Ride is recognized as one of the premier cycling events for those who DARE! Celebrating the 29th Anniversary of the Triple Bypass Bicycle Ride, the Triple offers two days of enjoying the beautiful sceneryRead More

Alison Dunlap MTB Level II Skills Clinic

Monument Valley Park 170 W Cache La Poudre St, Colorado Springs

Colorado Springs   Coed Clinic   The Level II clinics are for riders that are comfortable on singletrack and regularly ride mountain bikes off-road. A Level II rider likes technical trails but may not have the skills to feel comfortableRead More

WP Epic Singletrack: Race Randezvous

Hideaway Park 78927 U.S. 40, Winter Park

Winter Park   Epic Single Track Series Race 1: Saturday, June 10 - Granby Ranch XC Kick-Off Race 2: Saturday, June 24 - Super Loop Race 3: Saturday, July 8 - Race Rendezvous Race 4: Saturday, July 22 - ElkRead More

Leadville Silver Rush 50

Dutch Henry Hill U.S. 24 & McWethy Dr, Leadville

Leadville   Need a nice challenge? Then forget this one. It’s nasty. Cut the Blueprint for Athletes Leadville Trail 100 MTB in half, remove all the easy parts, throw in technical descents, burning lungs and wild animals and you’ll haveRead More

Lee Likes Bikes Level 2 MTB Skills Clinic

Valmont Bike Park Boulder

Valmont Bike Park, Boulder   Description Ride all sorts of terrain faster and smoother. Do you want to clean the rock garden at Hall Ranch (up and down)? Ready to boost jumps at Valmont and Trestle? This is the classRead More

$150

Lee Likes Bikes Level 1.5 MTB Skills Clinic

Sunset East Trails Erie

Sunset East Trails, Erie   Learn to flow down all sorts of trails — especially the sweet green, blue and black lines at Erie's Sunset East. This is a Level 1.5 class: more advanced than a Level 1 but lessRead More

$99