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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

The Broadmoor Pikes Peak Cycling Hill Climb

Pikes Peak Colorado Springs

The Broadmoor Pikes Peak Cycling Hill Climb features a competitive race sanctioned by USA Cycling and a Gran Fondo non-competitive fun ride that give cyclists of all abilities a truly

Crooked Gravel

High-altitude views abound in every direction. Crisp mountain air exhilarates the senses. And swarms of riders fire each other up. And that’s before the ride even starts!
Both the 68- and

Stonewall Century

The Stonewall Century is a challenging road bike ride along one of Colorado

Sunrise to Sunset Winter Park

Winter Park Sunrise to Sunset capitalizes on two well-established strengths: the Sunrise to Sunset model and Winter Park’s deep mountain-bike roots. Luscious singletrack trails crisscross the mountains of Winter Park.

Steamboat Stinger

The Steamboat Stinger, now a Colorado classic, aims to provide a challenging backcountry race experience showcasing some of Steamboat Springs’ finest singletrack. The Steamboat Stinger is also a fundraiser for

New Castle Rides and Reggae Festival

VIX Ranch Park 627 N Wildhorse Dr, New Castle

The New Castle Rides and Reggae Festival is a celebration of all things trails, mountain biking, music and community. Rides and Reggae includes a Saturday full of fun including live

Leadville Trail 100 MTB

This is it, the race of all races. One hundred miles across the high-altitude, extreme terrain of the Colorado Rockies, this event was created for only the most determined athletes.

Cystic Fibrosis Cycle for Life

About CF Cycle for LifeColorado CF Cycle for Life is a fully-supported ride with route options for riders of all abilities. Riders will benefit from fully stocked rest stops every

SBT GRVL – Steamboat Gravel

**2020 Registration is Sold-Out**SBT GRVL is a new, world-class gravel race experience held on the greatest gravel roads on Earth in magnificent Steamboat Springs, CO. The unique combination of the

Breck Epic

Let me explain. No, there is too much. Let me sum up; The Breck Epic. Back to the beginning. When mountain biking was a about big rides with friends. About

Colorado Classic

The Colorado Classic® presented by VF Corporation will be back in Colorado on August 27-30, 2020! After a successful 2019 race, we will continue to provide unheralded financial support, global

Venus de Miles

Bohn Park 201 2nd Ave, Lyons

Each year, Venus de Miles brings more than a thousand women together for sisterhood, community, and a great time, all in support of Greenhouse Scholars. Venus de Miles Colorado returns

Wild Horse Gravel

De Beque, Co   Brand new for 2019, Wild Horse Gravel showcases the unique high desertscape of the Western Slope. Hosted on the luxury High Lonesome Ranch, riders will be treated to a country cook-out, campfire, cabins, camping – orRead More

Wild Horse Gravel

Wild Horse Gravel showcases the unique high desertscape of the Western Slope. Hosted on the luxury High Lonesome Ranch, riders will be treated to a country cook-out, campfire, cabins, camping

Powderhorn Revolution Enduro – Round 4

Powderhorn Ski Resort 48338 Powderhorn Rd, Mesa

Round 4, of Revolution Enduro series will be hosted at Powderhorn Mountain Resort located in the Grand Mesa National Forest approximately 3 hour 45 minutes from Denver. This

Strade Bianche Boulder

Inspired by two great cycling traditions – Strade Bianche and l’Eroica – Strade Bianche Boulder is a Gravel Gran Fondo that combines Tuscan food and wine with Italian camaraderie and

The Denver Post Pedal The Plains Bicycle Tour

Pedal The Plains (PTP) is a bicycle tour of Colorado, a signature event of The Denver Post Community Foundation and an initiative of The Denver Post and the State of

Boulder Octopus Ride

The Vail/Boulder Octopus is an endurance road bike event that tackles Eagle/Boulder County’s eight quintessential climbs. The ride alternates between Boulder and Vail biennially. It is very challenging but for

Tour de Cure Colorado

12M, 30M, 63M and 100M Cycling; 5K Run; 5K WalkRegistration fee: $10
Fundraising Minimum: $250 for cyclists; $100 for walkers and runners; $50 for 12 and under


Over 30 million

Pedal 4 Possible

Pedal 4 Possible is a charity ride benefiting Craig Hospital patients and programs.
P4P features courses for all skill levels (10K, 30K, 50K, 100K and 100 Mile).

While raising awareness and money

Tour de Vineyards

Do you like riding bikes and then drinking wine with friends? Then you will love Tour de Vineyards.
Celebrate the fall with a scenic tour of Colorado’s Wine Country on September

Monarch Crest Crank

Riverside Park Hartford

Fundraising mountain bike ride, held on an International Mountain Bike Association Epic route along the Continental Divide, and benefits The Alliance in Salida/Chaffee County. Details available at 

Golden GiddyUp

The Golden Giddyup is a community sponsored bike event and trail stewardship program held in Golden, Colorado on Jeffco Open Space trails. Founded after the 2013 floods wrecked towns and

Pikes Peak APEX

Pikes Peak Colorado Springs

The Pikes Peak APEX, presented by RockShox, is a unique 4-day mountain bike challenge on the slopes of Pikes Peak, America’s Mountain.The event features exhilarating, exceptionally crafted routes through dirt roads, jeep

The Crippler

Holy Cross Abbey 2951 East US Highway 50, Canon City

The Crippler is a Colorado-style gravel road race that will provide AMAZING scenery with panoramic views while simultaneously pushing your limits for climbing and descent.

Tour of the Moon

Two Rivers Convention Center 159 Main St, Grand Junction

The Tour of the Moon was made famous in the 1980’s Coors Classic and later in the cycling movie American Flyers. Its legacy continues as one of the premier road