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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

RideLoops Tuesday Night Ride

Tuesday Evenings, all year 7-10pm   Loops is a Tuesday night bike ride through out central Denver. The ride covers approximately 15 to 20 miles and makes 3 to 4 stops along the way. Riders are encouraged to ride atRead More

Bikes for Tykes Build Party

Elevation Cycles - Highlands Ranch pin 2030 E County Line Rd, Littleton

Littleton   Join the Elevation Cycles' crew at our Highlands Rach location for a night fun and festivities! Build donated kids bikes, work on donated bikes, mingle and merry! You + Snack + Drinks + The Elevation Crew = BikesRead More

The Fat Tire Flurry II

Greenbriar Inn 8735 N Foothills Hwy, Boulder

Boulder    A winter bike ride from The Greenbriar to Jamestown and back celebrating five years of recovery from the 2013 flood and the repairs to James Canyon Drive Proceeds help fund the partnership between The Town of Jamestown andRead More

RideLoops Tuesday Night Ride

Tuesday Evenings, all year 7-10pm   Loops is a Tuesday night bike ride through out central Denver. The ride covers approximately 15 to 20 miles and makes 3 to 4 stops along the way. Riders are encouraged to ride atRead More

Fat Bike Joy Ride

Flying J Ranch Park 9509 County Highway 73, Evergreen

Conifer   Romp through the woods in a new way this winter! Whether your goal is to try something new, wake up your biking legs, keep your skills fresh, or learn some new ones, this beginner friendly ride through theRead More

3rd Annual New Year’s Day Ride

Long Mont Velo 1111 Francis Street, Longmont

Longmont   http://meetu.ps/e/G7fss/7S8jT/f Let's get together and start the year off staying fit!   Event details here

DRAFT Meetup

Odell Brewing 800 E. Lincoln Ave, Ft. Collins

Ft. Collins   Join us for a fast-paced event of ideas, entrepreneurs and bikes, capturing the exciting things happening in the bike industry at DRAFT: Fort Collins at Odell Brewing Co. Odell will be providing the first beer for allRead More

Fat Tire Ullr Bike Race

Gold Run Nordic Center 200 Clubhouse Drive, POB 168, Breckenridge

Breckenridge   We’re kicking off the Ullr Fest parade with the Fat Tire Ullr Bike Race! Last year, 70 competitors lined up at Ullr Bike! The race route will start from From Main St. the race will head east intoRead More

Front Range Fat Bike Series

Flying J Ranch Park 9509 County Highway 73, Evergreen

Conifer   Big Ring Cycles in partnership with Jeffco Open Space want you to join us in a two ride series full of fat bikes, food, great beer, fun prizes and plenty of smiles! The rides will be from 10:00AMRead More

Spin The Beetle Fat Bike Race

Custer 25280 Hwy 385 S, Custer

Custer, SD   25 mile fat bike race to further the stoke of the 2019 Burn the Beetle party in Custer, SD   Event details and registration here

Fat Bike Joy ride

Flying J Ranch Park 9509 County Highway 73, Evergreen

Conifer   Romp through the woods in a new way this winter! Whether your goal is to try something new, wake up your biking legs, keep your skills fresh, or learn some new ones, this beginner friendly ride through theRead More

Tennessee Pass Night Jam

Tennessee Pass Cookhouse and Nordic Center Leadville

Leadville   These unique and exciting races occur throughout the winter in and around Leadville. Utilizing groomed nordic ski trails, groomed singletrack, and snowmobile trails, these races are a great way to keep riding and racing during the off-season. ThreeRead More

Staunton Blizzard: The 2nd Annual Front Range Fat Bike Race

Staunton State Park 12102 South Elk Creek Road, Pine

Pine   Join us on January 20th at Staunton State Park for the Second Annual Staunton Blizzard, the Front Range Fat Bike Race! A big, fat, fun day of racing for a cause that will benefit the fat bike communityRead More

Gravel Training Ride: OMWinter Climbs

Rapha Boulder 1815 Pearl St, Boulder

Boulder   Join us for a fun and free winter training ride taking on the OMWinter climbs and local gravel around Boulder! There will be multiple groups so nobody will be left behind. Come early and fuel up with nuunRead More

Borealis Fat Bike World Championships

Crested Butte   The 4th Annual Borealis Fat Bike World Championships will be held on January 24-27, 2019. Featuring a fat bike vendor showcase, demos, fat bike races and lift served fat biking, it is a weekend that any bike enthusiastRead More

The Bikes of Wrath

Regal Village at the Peaks 1230 S Hover Rd, Longmont

Longmont Five Australians attempt to cycle 2600kms from Oklahoma to California in honour of the westward migration undertaken by 'The Grapes of Wrath's' Joad family. Through chance encounters with everyday Americans, the cyclists expand on the novel’s core themes ofRead More

Borealis Fat Bike World Championships

Crested Butte   The 4th Annual Borealis Fat Bike World Championships will be held on January 24-27, 2019. Featuring a fat bike vendor showcase, demos, fat bike races and lift served fat biking, it is a weekend that any bike enthusiastRead More

Borealis Fat Bike World Championships

Crested Butte   The 4th Annual Borealis Fat Bike World Championships will be held on January 24-27, 2019. Featuring a fat bike vendor showcase, demos, fat bike races and lift served fat biking, it is a weekend that any bike enthusiastRead More

Borealis Fat Bike World Championships

Crested Butte   The 4th Annual Borealis Fat Bike World Championships will be held on January 24-27, 2019. Featuring a fat bike vendor showcase, demos, fat bike races and lift served fat biking, it is a weekend that any bike enthusiastRead More

Petunia Mafia 2019 Kickoff Meeting

Boulder Cycle Sport - South 629 S Broadway, Boulder

Boulder   Petunia Mafia welcomes you to our women’s cycling team informational meeting. The portion of the evening for new/potential members who want to hear about what makes our team special will start at 6:30. Existing teammates will join atRead More

Outdoor Retailer Snow Show

Colorado Convention Center 700 14th St, Denver

Denver   Outdoor Retailer is the world's leading business-to-business outdoor sports show where industry brands, retailers, reps, suppliers and leaders gather. Each year, Outdoor Retailer is a must-attend for those serious about the outdoor sports industry. From writing new ordersRead More

Front Range Fat Bike Series

Flying J Ranch Park 9509 County Highway 73, Evergreen

Conifer   Big Ring Cycles in partnership with Jeffco Open Space want you to join us in a two ride series full of fat bikes, food, great beer, fun prizes and plenty of smiles! The rides will be from 10:00AMRead More

10th Annual Winter Walk and Bike Week

Boulder County CO

Boulder County   Get your bike winter-ride ready and break out the long johns, so you can stay warm while you take part in this awesome event! Even if it snows, you can still ride because Boulder County Road MaintenanceRead More

Catalyst Coaching Santa Barbara Training Camp

Santa Barbara   Come discover what the pros have known for years: the riding in Santa Barbara is incredible.     For the past few years, Catalyst Coach Nate Wilson has been putting on European cycling camps for the USRead More

Catalyst Coaching Santa Barbara Training Camp

Santa Barbara   Come discover what the pros have known for years: the riding in Santa Barbara is incredible.     For the past few years, Catalyst Coach Nate Wilson has been putting on European cycling camps for the USRead More

Winter Bike to Work Day

Boulder County CO

Boulder County   Get your bike winter-ride ready and break out the long johns, so you can stay warm while you take part in this awesome even! Even if it snows, you can still ride because Boulder County Road MaintenanceRead More

Catalyst Coaching Santa Barbara Training Camp

Santa Barbara   Come discover what the pros have known for years: the riding in Santa Barbara is incredible.     For the past few years, Catalyst Coach Nate Wilson has been putting on European cycling camps for the USRead More

Silverton Whiteout

Silverton   10 hour Fat Bike Race Not just a Fat Bike race but all sorts of fun!   Event details and registration here

Catalyst Coaching Santa Barbara Training Camp

Santa Barbara   Come discover what the pros have known for years: the riding in Santa Barbara is incredible.     For the past few years, Catalyst Coach Nate Wilson has been putting on European cycling camps for the USRead More

WinterBike @ Copper Mountain

Copper Mountain Copper Mountain

Copper Mountain   These unique and exciting races occur throughout the winter in and around Leadville. Utilizing groomed nordic ski trails, groomed singletrack, and snowmobile trails, these races are a great way to keep riding and racing during the off-season.Read More

Old Man Winter Bike Rally

Bohn Park 201 2nd Ave, Lyons

Lyons   The Old Man Winter Rally was created to be THE multi-sport winter event. With two bike courses and a one-of-a-kind running course, there is plenty of winter adventure for all runners and cyclists. Cycling It is the one andRead More

DUST2 Fat Bike FUN Race

Forest Service Road 725 British Columbia

British Columbia   We are stoked to be partnering with the Wolf Creek Trailblazers to host our thrid annual Fat Bike FUN Race on the most fun fat bike race course in Southwest Colorado on Forest Service Road 725 inRead More

Catalyst Coaching Santa Barbara Training Camp

Santa Barbara   Come discover what the pros have known for years: the riding in Santa Barbara is incredible.     For the past few years, Catalyst Coach Nate Wilson has been putting on European cycling camps for the USRead More

Fat Bike Joy Ride

Flying J Ranch Park 9509 County Highway 73, Evergreen

Conifer   Romp through the woods in a new way this winter! Whether your goal is to try something new, wake up your biking legs, keep your skills fresh, or learn some new ones, this beginner friendly ride through theRead More

1st Annual Winter Sports Festival

Powderhorn Ski Resort 48338 Powderhorn Rd, Mesa

Mesa   Winter Sports Festival provides the opportunity to demo the latest winter endurance sport gear and push yourselves with the races throughout the weekend, including cross country ski races, MADhorn Fat Bike Race, snowshoe 5k run race, and aRead More

Fat Bike Joy Ride

Flying J Ranch Park 9509 County Highway 73, Evergreen

Conifer   Romp through the woods in a new way this winter! Whether your goal is to try something new, wake up your biking legs, keep your skills fresh, or learn some new ones, this beginner friendly ride through theRead More

Frisco Freeze Fat Bike Race

Frisco   Join us for the 3rd Annual Frisco Freeze Fat Bike Race at the Frisco Nordic Center!  This is your one chance this winter to ride your fat bike on the Frisco Nordic trails; join us for a funRead More

Staunton Fattie Frenzy: A fat bike celebration

Staunton State Park 12102 South Elk Creek Road, Pine

Pine   Join us for a celebration of front range fat biking featuring a fast-paced and spectator-friendly 8-lap circuit race. Racers can go solo or in teams of 2 or 4 on the 1.5 mile loop so gather your friends,Read More

FrostBite TT – POSTPONED

Fort Collins   Weatch for update information USA Cycling License and BRAC membership required. Collegiate license is needed for the collegiate events. No annual licenses/memberships sold on race day - pruchase at http://www.usacycling.org/ and http://www.coloradocycling.org/   Event details and registrationRead More

Mineral Belt Mayhem

Cycles of Life Bicycles 309 Harrison Ave, Leadville

Leadville   These unique and exciting races occur throughout the winter in and around Leadville. Utilizing groomed nordic ski trails, groomed singletrack, and snowmobile trails, these races are a great way to keep riding and racing during the off-season. ThreeRead More

Frozen Dead Guy Days

Nederland   FREE EVENT VIEWING & ACCESS TO OUTDOOR BEER, BAR & FOOD! $20 WRISTBANDS (GOOD FOR ENTERANCE INTO ALL 3 LIVE MUSIC TENTS) CAN BE PURCHASED AT ALL TENTS SAT/SUN.   Event details and registration here

BRAC Junior Track Camp

Olympic Training Center Colorado Springs

Colorado Springs   The Full Deal -- This includes staying in the OTC dorms for two nights, eating up to 7 meals at the OTC cafeteria, and participating in 4 sessions of track riding and racing. The cost is $125Read More

Fat Tire Joy Ride

Flying J Ranch Park 9509 County Highway 73, Evergreen

Conifer   Romp through the woods in a new way this winter! Whether your goal is to try something new, wake up your biking legs, keep your skills fresh, or learn some new ones, this beginner friendly ride through theRead More

2nd Annual Fatty Patty 50k

Leadville   These unique and exciting races occur throughout the winter in and around Leadville. Utilizing groomed nordic ski trails, groomed singletrack, and snowmobile trails, these races are a great way to keep riding and racing during the off-season. ThreeRead More

Pedaling for St. Pats

Colorado Springs   Join hundreds of cyclists for your choice of ride across the city. Three courses to chose from ranging from a family friendly course to a grueling but amazing ride from Downtown to the top of Woodmen atRead More

Staunton Snoduro

Staunton State Park 12102 South Elk Creek Road, Pine

Staunton State Park, Pine   Registration is open for the Staunton Snoduro, the Enduro-style Fat Bike Race on Sunday, March 17 at Staunton State Park! The course: Six stages. 18-19 miles total. STAGE #1 START: Near the overlook (highpoint) onRead More

Bicycle Revolution Advocacy Event

Community Cycles 2805 Wilderness Place Suite 1000, Boulder

A fun positive advocacy movie (thebicyclerevolution.org) with new LA music will be looping while representatives from the Community Cycles advocacy committee, City and County staff, and the City's Transportation Advisory Board can answer your questions and receive your input. TransportationRead More

Karen Hornbostel Memorial Time Trial Series

Cherry Creek State Park 4201 S. Parker Road, Aurora

Aurora   The 2019 Series consists of seven (7) individual time trials on consecutive Wednesday evenings.   Event details and registration here

SETCR Spring Road Camp

Source Endurance Training Center of the Rockies 1833 E Harmony Rd #20, Ft. Collins

Ft. Collins   Source Endurance Training Center of the Rockies’ Spring Road Camp is back for Year 3 with bigger and better support. The camp will run Thursday March 21st through Sunday March 24th. The camp is hosted by proRead More