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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

USA Cycling Amateur Road National Championships

USA Cycling Amateur Road National Championships p/b Papa John June 29- July 2 - Louisville, Ky. Registration Online Registration Opens April 26, 2017 at 11:00 a.m. ET Pro TTT Amateur TTT Junior Individual Races U23/Cat 1 Individual Races Pro IndividualRead More

VIDA MTB Clinic

Trestle Bike Park 85 Parsenn Rd, Winter Park

Trestle Park, Winter Park   We are excited to return to the home base for our largest event in the Rocky Mountains at Trestle Bike Park on July 1-2, 2017. Colorado’s Favorite Ski Resort is also a three-time first place winner in theRead More

DUST2: Urban Single 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

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

Firecracker 50

Carter Park 300 High St, Breckenridge

Breckenridge   Greetings and welcome to the 2017 Firecracker 50, presented by Lincoln Park! This year’s race is on Tuesday, July 4th!  It’s always on the 4th…no matter what day of the week it falls! The Firecracker 50 is non-sanctioned.Read More

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

31st Annual Longmont Criterium

Photos - Brent Murphy Photo - SportifImages 2017 marks the 31sth Annual Longmont Criterium Classic. The 0.7 mile “L” shaped course is mostly flat and winds around shady, historic Thompson Park. Wide, smooth streets make this a fast and excitingRead 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

Storm Peak Hill Climb

Mt Werner Steamboat Springs

Mt Werner, 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 16th SunshineRead More

Lost Lake Loop

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 (adults only)Read More

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