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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 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

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

Littleton Twilight Criterium

Main Street & Alamo Avenue Littleton

Main Street, Alamo Avenue, Littleton   The Littleton Twilight Criterium is back for its fifth year! It’s a free festival atmosphere featuring food, a beer garden, kids activities and live music on the streets into the evening. A “criterium” raceRead More

Mike Nields Mem’l Bannock St Crit

Denver   The Bannock St. Crit in memory of Mike Nields, is held in the Golden Triangle in Denver.   The Golden Triangle is one of the oldest neighborhoods in Denver, and is now filled with restaurants, art galleries, and offices.    The CritRead More

Ride Like a Girl

Big Ring Cycles 600 12th Street, Golden

Golden   Ride Like a Girl: 1st Annual Colorado Women's Ride Day Celebrating women cyclists with women-led road & mountain bike rides for all abilities Whether you’re a newbie or a seasoned veteran, a roadie or mountain biker, join us forRead More

PedalingMinds Presents:Le Ride Premier

Century Theater 1700 29th St, Boulder

Boulder   Phil Keoghan host of 17 time Emmy awarding winning show Amazing Race on CBS and his friend Ben decided to honor the first ever English speaking team in the Tour de France - A New Zealand rider andRead More

Megan Hottman, The Cyclist Lawyer

Full Cycle Bike Shop, Espresso Bar, and Tap Room 1795 Pearl St, Boulder

Boulder   Join us as we host Megan Hottman at Full Cycle on Pearl Street. Learn about cycling law in Colorado, what to do and not to do to be safer on the roads, insurance you will want to beRead More

Rocky Gulch 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

SMC: Soda Creek Scramble

Keystone CO

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

Velorama Colorado Classic UCI Stage Race

Colorado Spring, Breckenridge, Denver   Stage 1, August 10:  Colorado Springs (men and women) Stage 2, August 11:  Breckenridge (men); Denver circuit race in RiNo Art District (women) Stage 3, August 12:  Denver (men) start and finish in RiNo ArtRead More

DUST2: Shaeffer’s 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 haveRead More

Dirt Jumps & Donuts

Rhyolite Park 1701 Crystal Valley Pkwy, Castle Rock

Castle Rock  

BStrong Ride

Boulder   WHY THIS EVENT? Take your pick of reasons: 1. Ride to leave cancer behind. The Causes: B Strong Ride celebrates cancer survivorship, funds a complete year of cancer care at the Center for Integrative Care at Boulder CommunityRead More

Pikes Peak Cycling Gran Fondo

Colorado Springs   The Broadmoor Pikes Peak Cycling Hill Climb Gran Fondo features a non-competitive fun rides that give cyclists of all abilities a truly unique experience on Pikes Peak - America's Mountain.  It will be held in conjunction with theRead More

Colorado Trail Classic

Molas Pass, Silverton   The Colorado Trail Classic is a point-to-point event in the COES.  Bummer you can’t loop it out but the one-way route is just too classic to miss!    What: Singletrack, high elevation, back country self supported enduranceRead More

Steamboat Stinger MTB Race

Howelsen Hill Ski Area Howelsen Pkwy, Steamboat Springs

Steamboat Springs   In 2017 we are proud to announce the seventh annual 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 StingerRead More

2nd Annual Bite the Bullet Gravel Fondo

New Belgium Brewery 500 Linden St, Ft. Collins

Ft. Collins   Second Annual FoCo Fondo's Bite the Bullet Gravel Fondo in Fort Collins, Colorado, hosted at New Belgium Brewing.  Fort Collins first Gravel Fondo! Here's the short and simple: Remote gravel roads, open spaces, heavily stocked aid stations,Read More

Bike MS: Bighorn Country Classic

Sheridan College Sheridan

Sheridan, Wy   Bike MS: Bighorn Country Classic 2017 is a two-day ride that will take you farther than you’ve ever gone before. What makes this ride so special? Participants will ride through beautiful Sheridan, Wyoming and the surrounding communities.Read More

Velorama Mayor’s Ride & Kid’s Ciclovia

Walnut & 30th St Denver

Denver   Mayor Michael B. Hancock will lead a youth bike ride and cut the ribbon on a kid’s ciclovia event for youth ages 5-15 at the Velorama Festival in RiNo, River North Art District on Saturday, August 12th. The ride will depart from the start/finishRead More

Pioneers of the Peloton

Denver Velorama Colorado Classic Expo       Those guys in the photo? The first American cycling team to contest the Grand Tours of Europe – Team 7-Eleven.   Join us Saturday August 12th at the Colorado Classic Expo Meet and Greet withRead More

Backcountry Burner CX

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

DUST2: Shaeffer’s 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

3rd Annual Food Rescue Ride

Cherry Creek State Park 4201 S. Parker Road, Aurora

Cherry Creek State Park   This is Denver Food Rescue’s yearly un-gala. We wanna be out on our bikes while we fundraise and celebrate the successes of DFR and our neighborhood partners! Our rad community is passionate about bikes ANDRead More