Since 1991, the Karen Hornbostel Memorial Time Trial has been a spring rite of passage—Wednesday evenings at Cherry Creek State Park—where riders gather to test themselves against Colorado’s mercurial weather and a deceptively beautiful course.
35 events found.
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Calendar of Events
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Tour of the Gila is the iconic road bicycling stage race in Silver City, NM. Sanctioned by USA Cycling and the UCI, it provides a chance for amateur athletes to compete on the same courses as professionals. |
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4 events,Fangdango is set in the hills just west of Castle Rock. Thanks to the fine folks at the MAC and the town of Castle Rock, the course features some of the old classics at the Phillip Miller Activity Complex. Only a short drive from the Denver Metro area, and very easy to get to, expect […] At the TransRockies Moab Fondo Fest, we're bringing you two incredible events, and the choice is yours – Gran Fondo Moab on Saturday or Gravel Fondo Moab on Sunday. Or, for the ultimate challenge, tackle both events back-to-back! Get ready for an extraordinary weekend of cycling like never before! Join us on Saturday, May 2, […] 
Have you ever wondered what it was like to ride a tandem? It’s probably easier than you think. Come learn how. Do you have a tandem and want to see some cool new stuff? Have you wanted to try an electric-assist tandem? Come check it out. Do you want to ride a tandem, but do […]
Free
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4 events,
All across the US and in Canada, the North American Tandem Association is hosting self-paced tandem rides on May 3rd (California, Oregon, Texas, New Jersey, Ontario Canada, and more). The Denver area ride, co-hosted by da Vinci Designs, Tandem Cycle Works, Tandem Bicycle Tours, Colorado EyeCycle, and the Colorado Tandem Club.
Free
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Sometimes you don't realize how much you miss something until it's gone! After five long years the Koppenberg is back, maybe for just one last dance. We hope you join the action because we never know when the last goodbye will be. If you're new to racing you'll want to find out if all the […] |
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3 events,
Since 1991, the Karen Hornbostel Memorial Time Trial has been a spring rite of passage—Wednesday evenings at Cherry Creek State Park—where riders gather to test themselves against Colorado’s mercurial weather and a deceptively beautiful course. 
Fun low-key grassroots mountain bike races open to the public. Held every Wednesday evening in May and June. The course changes every week, but is typically a 1-mile lap and most races are 4-5 laps, or about 25 minutes. The races are broken into several categories to choose from. Register at the venue on race […]
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Mountain Bike and Mini Mountain Bike Kid’s Race Aspen Cycling Club has changed the name of Prince Creek Race to Party in the Pinions as a celebration of Dave Krimstock. All proceeds from Guest Memberships from this race going forward will go to the Dave Krimstock Scholarship Fund. Following the race we will have an […] |
1 event,
Featured
Big fun is rolling your way. Mark your calendars for Thursday, May 7th, for the return of Gear Up! 2026. We’re bringing the FUN back to this Fundraiser. More information coming soon on the new location and new vibe. |
1 event,
Rides & Vibes in Grand Junction on May 8-9 is a weekend of bikes, music, and fun! The weekend includes over 20 hours of live music, a downtown beer garden, community & kid rides, pro & amateur MTB races, fat tire crit, and more! FRIDAY, MAY 8 4:00 PM-10:00 PM - Music Festival4:00 PM-7:00 PM […] |
4 events,
Welcome to the 13th Edition of the Frostibite Time Trial! We've moved our date to May, so the chance of Frostbite is minimal this year. Come join us to test yourself against the clock. We have individual race categories for both Time Trial Bikes and Regular Road Bikes (Beginners to Pros). We have Junior and […] The 12 Hours of Mesa Verde is a premier cycling event organized by volunteers dedicated to improving the lives of youth in Southwest Colorado. Get ready to unleash your inner adventurer in the breathtaking backcountry of Colorado, where Fruita is calling your name! This rugged desert playground is the ultimate hub for thrill-seekers, boasting a smorgasbord of adventure sports that'll make your heart race! Whether you're crushing trails on foot, paddling through whitewater, shredding the mountain on your bike, […] |
2 events,
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You Can Do It! Has your child been struggling to learn to ride a bike? Our effective gliding technique has most students riding within two hours! REGISTER HERE Location and Time Class is held in a coned-off portion of Mike's Bikes Highlands Ranch location parking lot at 2030 E County Line Rd. Class runs for […] |
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1 event,
SPRING DIRT PILE SHORT TRACK MOUNTAIN BIKE RACE SERIES SIX RACES: MAY 12, 19, 26 JUNE 2, 9, 16 Online registration ONLY (opens Wed. for the following week) HOSTED BY: SendTown Bike Club, a local 501(c)(3) nonprofit, and our Community Partners, courtesy of New Belgium Brewing in Fort Collins. We're stoked to welcome you and […] |
3 events,
Since 1991, the Karen Hornbostel Memorial Time Trial has been a spring rite of passage—Wednesday evenings at Cherry Creek State Park—where riders gather to test themselves against Colorado’s mercurial weather and a deceptively beautiful course.
Fun low-key grassroots mountain bike races open to the public. Held every Wednesday evening in May and June. The course changes every week, but is typically a 1-mile lap and most races are 4-5 laps, or about 25 minutes. The races are broken into several categories to choose from. Register at the venue on race […] 
Wednesday Morning Velo is Boulder’s premiere networking group ride. Every Wednesday starting May 13, at 6:30 am. |
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SUPERIOR TIME-TRIAL RACE INFORMATION - Saturday May 16th, 2026 Superior Time-Trial Race Information: This is a 7.5 mile rolling course on the scenic roads between Superior and Louisville. The finish is also located just 1 mile away from the Louisville Criterium, so stage racers can easily transition from stage 1 to 2. Race Start Times: The 1st […]
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The Louisville course offers buttery smooth asphalt, fast flowing corners, a power incline, and wide open roads to really put the hammer down! If this is you're only race at Superville, come shake off the rust and open up the throttle! If you're racing the Superville Stage Race then you'll earn a time bonus for […]
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Hosted at the stunning and luxurious High Lonesome Ranch, this is more than just a race—it’s a full-blown Wild West weekend! Cyclists will enjoy a country cookout, campfires, live local music, and camping accommodations. In true western style, it’s a hoedown you don’t want to miss! The weekend features the Wild Horse Gravel bike races on Saturday, followed […]
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The 32nd annual Ride for the Pass is a once-a-year opportunity to enjoy the beauty and quiet of Independence Pass without cars, in a fully supported, timed ride, with a fantastic raffle and barbecue to follow. All proceeds benefit IPF. This race is organized and run by the Independence Pass Foundation. It is not an […]
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Come join us at the Royal Gorge Six and Twelve, just outside of Cañon City, CO! This 6-12 hour endurance event is held at the beautiful Royal Gorge Park. Ride as a solo, duo, or team to complete the most laps in 6 or 12 hours while hanging out in a gorgeous, family-friendly venue. This […]
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Join the Tour de Victory Cycling Challenge, Colorado’s premier Parkinson’s ride benefiting the Davis Phinney Foundation. This boutique bike ride is an opportunity to join the Davis Phinney Foundation’s inspiring community and make a positive impact on the lives of people with Parkinson's. Select your preferred route (100k, 50k, or 20k) and ride any bike […] |
2 events,
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The Superville Stage Race all comes down to the Superior Morgul Road Race, one of the most iconic courses in all of Boulder County! Racers will compete on a 7-mile, fully closed to traffic, loop course on Highway 128. This is a rolling course on wide roads, with smooth asphalt. (see course map for […] 
Join FoCo Fondo Monthly Training Rides- come on out to meet and ride with new people! The ride departs from New Belgium Brewing at 10 am. Please fill out the waiver to attend. We’ll stick around afterwards for a beer and food truck lunch. A free Fat Tire is available! Two routes each month, with […]
Free
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1 event,
SPRING DIRT PILE SHORT TRACK MOUNTAIN BIKE RACE SERIES SIX RACES: MAY 12, 19, 26 JUNE 2, 9, 16 Online registration ONLY (opens Wed. for the following week) HOSTED BY: SendTown Bike Club, a local 501(c)(3) nonprofit, and our Community Partners, courtesy of New Belgium Brewing in Fort Collins. We're stoked to welcome you and […] |
4 events,
Since 1991, the Karen Hornbostel Memorial Time Trial has been a spring rite of passage—Wednesday evenings at Cherry Creek State Park—where riders gather to test themselves against Colorado’s mercurial weather and a deceptively beautiful course.
Fun low-key grassroots mountain bike races open to the public. Held every Wednesday evening in May and June. The course changes every week, but is typically a 1-mile lap and most races are 4-5 laps, or about 25 minutes. The races are broken into several categories to choose from. Register at the venue on race […]
Wednesday Morning Velo is Boulder’s premiere networking group ride. Every Wednesday starting May 13, at 6:30 am.
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All racers start near Hook’s Spur Trailhead and take a left onto the Glassier Open Space trail. Riders will proceed to the Glassier Bike/Hike Trail (course marshals will open and close the trail gate) and climb to the top. Then: Long course (Men’s A, Women’s A, Men’s B): From the top of Glassier, continue climbing up Vasten […] |
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1 event,The Iron Horse Bicycle Classic is THE big race! Gear up or just watch as bikers race the train from Durango to Silverton all day. Events include the most popular race, the McDonald’s Citizen Tour, which winds through 50 miles of beautiful Colorado scenery, La Strada La Plata Gravel and the Durango Mesa Cycling Festival. […] |
3 events,The Original Growler is the primary fundraiser Gunnison Trails, a 501(c)3 non-profit trail advocacy organization. Gunnison Trails is dedicated to maintaining and expanding the singletrack experience in the Gunnison area. 100% of the proceeds from the Original Growler benefit trails and Gunnison Trails, including the construction of over 10 new miles (and counting) of singletrack in the Signal Peak area behind Western Colorado University. 
Join the Fort Follies and FoCo Fondo for the fourth year of the women’s gravel clinic led by some of our amazing NoCo gravel pros. This year, we’re excited to continue the women’s weekend, pairing the clinic on Saturday with a Sunday women’s training ride (no registration required) to fill your weekend with bikes and […]
$35 – $50
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5 events,The Farmstand 50 is a local favorite route through “The Mesa”, Pueblo’s agricultural breadbasket. Roads on the Farmstand 50 are well-maintained, with minimal climbing and a bit more texture than the roads found on our Grassroots Gravel courses featured each October.
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You Can Do It! Has your child been struggling to learn to ride a bike? Our effective gliding technique has most students riding within two hours! REGISTER HERE Location and Time Class is held in a coned-off portion of Mike's Bikes Highlands Ranch location parking lot at 2030 E County Line Rd. Class runs for […] |
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0 events,
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1 event,
SPRING DIRT PILE SHORT TRACK MOUNTAIN BIKE RACE SERIES SIX RACES: MAY 12, 19, 26 JUNE 2, 9, 16 Online registration ONLY (opens Wed. for the following week) HOSTED BY: SendTown Bike Club, a local 501(c)(3) nonprofit, and our Community Partners, courtesy of New Belgium Brewing in Fort Collins. We're stoked to welcome you and […] |
5 events,
Fast, techy, and raw, the Session Series aims to please. Riders compete for the quickest time down some of the best trails on the front range - Wednesday nights.
Fun low-key grassroots mountain bike races open to the public. Held every Wednesday evening in May and June. The course changes every week, but is typically a 1-mile lap and most races are 4-5 laps, or about 25 minutes. The races are broken into several categories to choose from. Register at the venue on race […]
Wednesday Morning Velo is Boulder’s premiere networking group ride. Every Wednesday starting May 13, at 6:30 am. The Summit Mountain Challenge Mountain Bike Series was acquired from the legendary Jeff Wescott (Westy) of Maverick Sports Promotions in 2021. Breckenridge Recreation continues to aspire to Westy's goal: to create community through fun, affordable, well-organized athletic events. Racers must participate in 5 of 6 of the same courses (long, short, kids) to be eligible for […]
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All categories race the same course. From the race start at the Emma Schoolhouse, racers head up East Sopris Creek Road to a T-intersection with East and West Sopris Creek Roads. Turn left (east) onto East Sopris Creek Road. The paved road gives way to a mag chloride treated dirt surface about a mile up […] |
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2 events,To be in a position to carry the legacy of an iconic Colorado race is super exciting for us. Sunrise to Sunset is a classic event that has been around for a long time. Still at Phillip Miller Park in Castle Rock, this course and venue are perfect for 12 hours of mountain bike racing. […]
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Join us for Lucky Bikes Family Mountain Biking Day featuring youth mountain bike skills courses, bike-themed games, and beginner trail rides. We’ll have snacks, refreshments, and fun for all ages. Bring your friends and family for a great time in one of our beloved local parks. This is a free event (Donations encouraged) hosted by […]
Free
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1 event,
Outlaw Gravel is a new gravel cycling event based in Steamboat Springs on May 31. Designed for both experienced racers and riders new to competition, the event introduces a timed-segment format that rewards strategy as much as strength. Riders will take on multiple professionally timed gravel segments across the South Valley, connected by neutral sections […] |
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