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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

TriVelo Youth MTB Camp

Snow Mountain Ranch 1101 County Road 53, Granby

Snow Mountain Ranch, Granby, CO   With a focus primarily on youth skills development and competition, TVS offers a Mountain Bike Camp aimed at providing athletes of various ages the opportunity to develop their cycling skills and enjoy  learning toRead More

Bob Cook Memorial Mt Evans Hill Climb

Clear Creek Middle School 320 Chicago Creek Rd, Idaho Springs

Idaho Springs   The Bob Cook Memorial Mt. Evans Hill climb is an iconic bicycle race that takes place on the highest paved road in the United States. Celebrating it’s 52nd year, it was run for the first time inRead More

Rocky Mountain Enduro Series Race #1

Angel Fire Angle Fire

Angle Fire, NM   Five Races, Three States, Great Racing! Kicking the RMES racing off, we will be at one of North America’s premier and legendary bike parks! This long standing venue will be offering the best of lift serviceRead More

Durango Dirty Century

Velorution Cycles 877 East Third Street, Durango

Durango     Event details and registration here   Part of the Colorado Endurance Series. Series event list here

DUST2: Cloman Park Revival

Mark you calendars for the 2017 DUST2 Back Yard Mountain Bike Race Series line up! This fun race series has something to offer riders of every ability, so bring the whole family and all your friends! This year we have addedRead More

Women’s Cycling Camp

Steamboat Springs   Ladies, this is your chance to get away from your busy lives by spending a few days in the mountains getting fit, soaking in the hot springs, learning key health & wellness strategies, and enjoying a mealRead More

CPFAA Games MTB Race

South Dinosaur Park Morrison

Morrison   Dakota Ridge-Red Rocks Loop can be viewed at this link. There is also a great video link of the course. Course is rated as a Double Diamond, technical single track with some suggested walkable areas. Sport class will doRead More

SMC: Pennsylvania Gulch Grind

Summit County   The Summit Mountain Challenge Mtn Bike Series was inherited in 2001 by Maverick Sports Promotions. Jeff had been timing alpine ski races for Team Breckenridge since 1996, raced bikes for a couple of years, and was looking forRead More

Tour de France Breakfast

Feedback Sports 600 Corporate Cir, Golden

Golden   Join us for a live viewing of Stage 18: the final battle between the climbers at the heart of one of the most spectacular locales of the Tour. The last ten km before the summit of the IzoardRead More

CX Strength and Conditioning

REVO Physiotherapy 3550 Frontier Ave, Boulder

Boulder   Cross is most definitely coming!.....Are you ready? Don't be left in the metaphoric dust secondary to ill preparation, or even worse, miss races with a nagging injury. Prepare yourself now to reap the benefits through the season.  Read More

Rocky Mounts Guest Bartender: Luis Benitez

RockyMounts 2845 29th St Unit B, Boulder

Boulder A casual event with Luis Benitez to celebrate the launch of the Colorado League's 8th season. Luis has been an integral part in orchestrating bringing Outdoor Retailer to Denver, article here. Lots of fun outdoor games and raffles going onRead More

Tooth or Consequences MTB Festival

Ft. Collins   We are excited to announce the second annual 2017 Tooth or Consequences Mountain Bike Festival held in beautiful Northern Colorado. Tooth or Consequences is a multi-day mountain bike extravaganza featuring a Friday evening Packet Pickup Party, anRead More

Courage Classic

Copper Mountain Copper Mountain

July 22-23 Copper Mountain “Join over 2,000 fearless riders from all walks of life along with more than 300 extraordinary volunteers in supporting Children’s Colorado patients and their families in 2017. The two-day bike tour through Colorado’s high country accomplishesRead More

WP Epic Singletrack: Elk Creek XC

Winter Park Ski Area 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

Telluride 100

Telluride     Event details and registration here

Shimano Tour de Steamboat

Little Toots Park Steamboat Springs

Steamboat Springs   The Tour de Steamboat is an annual bicycle event that brings together 1000 cyclists and over 30 local and state-wide volunteers, on a one-day ride through beautiful Northern Colorado. Names like Rabbit Ears Pass, Gore Pass, YellowRead More

Colorado-Eagle River Ride

Beaver Creek   The River Ride will continue to offer 100-mile, 68-mile, and 42-mile routes to suit every rider’s ability. Whatever option you choose, you will be rewarded with beautiful views of the Colorado and Eagle rivers. 100-milers and 68-milersRead More

The Heart of Colorado

Manitou Springs     This tour will allow you to discover the heart of Colorado, not only because it is in the center of the state but because it will allow you to explore the many different attributes that makesRead More

Lucky Pie Criterium

Louisville CO Master Criterium Championships The 2017 Masters State Criterium championship sponsored by Lucky Pie Pizza & Tap House and hosted by Sonic Boom Racing and Louisville Velo Club will return to the same great course as 2016, a flatRead More

Colorado Trail Race

Velorution Cycles 877 East Third Street, Durango

Durango to Waterton Canyon, Denver   The CTR: 500 miles and 70,000' of elevation gain winding through the Colorado Rocky Mountains between Denver and Durango. Approximately 300+ miles of singletrack at elevations ranging from 5500' to a gasping-for-breath 13,200'. TheRead More

Endurance Cycling Camp

Steamboat Springs   Looking to improve your cycling endurance, learn key skills, and challenge yourself mentally and physically? Join our endurance cycling camp open to men, women and juniors.   Event details and registration here

Tour de Freeze

Highline Canal Denver

    A collaboration between the Front Ranger Cycling Club & the High Line Canal Conservancy A five-day bike ride with disadvantaged inner city youth of the High Line Canal from start to finish. It would be a day rideRead More

Camp Hale Hup

Camp Hale CO

Camp Hale   Event details and registration here   Full series includes the following events May 31st - Eagle Ranch Classic XC June 14 - Berry Creek Bash June 28 - Battle @ Bellyache  July12 - Lost Lake Loop (adultsRead More

Howelsen Howler

Howelsen Hill, Steamboat Springs   Event details and registration here   Series Schedule June 7th - Marabou XC June 21st - Emerald Envy XC July 12th - Bike Town Challenge, Storm Peak HC July 26th - Howelsen Howler August 16thRead More

BVSD Bike Ed Program

full cycle 1795 Pearl St, Boulder

Boulder   Please join Cyclists for Community, as we support 2 of our local Children's Safe Riding Programs here in Boulder County. Featured beneficiaries: PEDALING MINDS and the BOULDER VALLEY SCHOOL DISTRICT! Not to be missed, this event will be aRead More

Salida Classic

Salida   Friday - TT Saturday - Criterium Sunday - CO Senior Road Championships   Event Flier here Contact: blee1216@icloud.com   Rocky Mountain Road & Team Cup Event

Leadville Stage Race

Leadville   Buckle up! The Blueprint for Athletes Leadville Stage Race takes the course of the historic Leadville Trail 100 MTB and spreads it over three exciting days. Riders get the chance to win daily prizes and maybe even wearRead More

Denver to Aspen Classic

Sloans Lake Park 26th and Tennyson St, Denver

Date: Saturday, July 29, 2017 Sign-in/Start: 3:00 am/4:00 am Start location: Sloans Lake Park, 26th and Tennyson St., Denver, CO End location: Woody Creek Tavern, Woody Creek, CO. Map: Denver to Aspen Brief description: Denver to Aspen is an EPIC single-day adventure from the Colorado's capitalRead More

14th Annual Grin & Barrett Charity Ride

Red Arrow Inn & Suites 1702 E. Main St. , Montrose

Montrose   The Black Canyon Buttkicker Charity Ride is held annually in Montrose, Colorado, to support patient wellness through San Juan Healthcare and the Caring Friends Fund.  In 2004, a group of riding enthusiasts and passionate men banded together inRead More

Breck 100

Carter Park 300 High St, Breckenridge

Breckenridge   Welcome to Colorado’s premier off-road endurance race, the 12th annual BRECK 100. This incredible course climbs 13,719 feet over 100 miles.  Not quite ready for the Ultra 100?  Challenge your abilities and ride the B-68 Marathon, the B-32 XC,Read More

Laramie Enduro

Medicine Bow National Forest Headquarters Rd, Laramie

Laramie, Wy   New Course for 2017   The Laramie Range Enduro originated in 1998 with a start/finish line located within the City of Laramie, Wyoming and climbed the west flank of the Laramie Range more than 1,300 feet intoRead More

DUST2: Bush’s Pump Track

Mark you calendars for the 2017 DUST2 Back Yard Mountain Bike Race Series line up! This fun race series has something to offer riders of every ability, so bring the whole family and all your friends! This year we have addedRead More

Lee Likes Bikes Level 1 MTB Skills Clinic

Valmont Bike Park Boulder

Valmont Bike Park, Boulder   Mountain biking is such a rad sport—and it’s about to get even radder. Do you know how it feels to rail a turn on skis or snowboard? Learn how to do that on your bike.Read More

$75

Highlands Point Circuit

Highlands Ranch   Registration opens on June 1 for the package of four races, and is open until August 1. At that time, you can still register for each individual race either in advance or at the race ($5 moreRead More

CMWC – Highlands Ranch Series

Highlands Ranch   The Colorado Mid-Week Championship (CMWC) is 12 awesome competitive races for competition levels ranging from 1st time racers (beginners) to the PRO level competitors on 12 different nights, right here in your backyard.   The HRCA MTBRead More

Davos Dash

West Vail Holiday Inn 2211 N Frontage Rd W, Vail

West Vail   Event details and registration here   Full series includes the following events May 31st - Eagle Ranch Classic XC June 14 - Berry Creek Bash June 28 - Battle @ Bellyache  July12 - Lost Lake Loop (adultsRead More

VIDA MTB Clinic

Snowmass Bike Park snowmass

Snowmass Bike Park   Snowmass deserves its reputation as a world-class mountain biking destination. It's simply amazing, and if you haven't been here, you need to come. We will take over the Snowmass Bike Park and surrounding trails to teach all levelsRead More

Stonewall Century Ride

Highway of Legends Le Veta

Le Veta, Co   The Stonewall Century is a challenging road bike ride along one of Colorado's most beautiful scenic highways. We welcome you to come and enjoy some of the best road riding in Southern Colorado.   Join usRead More

Copper Triangle

Copper Mountain Copper Mountain

Copper Mountain   The famous Copper Triangle has long been considered one of Colorado’s classic alpine road rides.  Graced with breathtaking scenery, gorgeous roads and three challenging climbs, the i25Kia.com Copper Triangle exemplifies cycling in the Colorado Rockies. A spectacularRead More

Rocky Mountain Enduro Series, Race #2

Powder Horn Resort Mesa

Mesa, Co Five Races, Three States, Great Racing! We’re excited to offer an new venue to the Enduro race scene with the introduction of Powderhorn Resort.  Day 1 and 2 will see a combination or lift service and pedal transfersRead More

WP Epic Singletrack: Point-to-Point

Winter Park Ski Area 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

Colorado Park 2 Park Challenge

Denver City Park 17TH Ave & Colorado Blvd, Denver

Denver City to Winter Park   This event started in 2011 with one man’s idea to ride from his home near Denver’s City Park to his newly purchased townhome in Winter Park. The unorganized inaugural year involved only 8 ridersRead More

The Mountains Revenge

Montezuma   This is intended to be NON-COMMERCIAL, Recreational-Use Activities that are held on parts of USFS lands in compliance with USFS Special Use Rules and Regulations. Please make sure to read all rules for this.  This is fully unsupported and youRead More

Lee Likes Bikes Level 1 MTB Skills Clinic

Valmont Bike Park Boulder

Valmont Bike Park, Boulder   Mountain biking is such a rad sport—and it’s about to get even radder. Do you know how it feels to rail a turn on skis or snowboard? Learn how to do that on your bike.Read More

$75

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