Bicycle Colorado

Summit Mountain Challenge
2026-08-15 09:00 - 13:00 (America/Denver) | Breckenridge, CO, Breckenridge, Colorado
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 the series overall winner.

Frisco Round Up 5/27
Tour De French Gulch 6/10
Peaks Trail Time Trial 6/24
Aspen Attack 7/22
Swan River Rampage 8/5
Summit Classic 8/15

PLEASE NOTE: In the event of inclement weather or unforeseen trail conditions, the race director reserves the right to delay, cancel or reschedule the race. There are no refunds in the event of a race cancellation or change.
Register For The Series Here
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TNT Tuesday Night Thunder Race Series
2026-08-18 17:30 - 20:00, 2026-08-25 17:30 - 20:00, 2026-09-01 17:30 - 20:00, 2026-09-08 17:30 - 20:00, 2026-09-15 17:30 - 20:00, 2026-09-22 17:30 - 20:00, 2026-09-29 17:30 - 20:00, 2026-10-06 17:30 - 20:00 and 4 more dates | Louisville, CO
Weeknight Criterium Bike Racing. Join us every Tuesday starting in June for some fast paced fun! Races will be self categorized and unsanctioned, keeping racing affordable and fun for everyone!

THE COURSE
The 0.6 mile TNT course is perfect for beginners and features three wide 90 degree turns followed by a long and gradual sweeping uphill turn that leads into the start/finish line.

Maroon Bells Time Trial
2026-08-19 08:00 - 17:00 | Aspen, CO, Aspen, Colorado
Important Race Information

Online race entries are required for time trail races for ALL RACERS (including members and juniors). All racers must enter this race by 8:00 PM the night before the race. Scroll down for race entry information.
Start lists will be posted on this page by 10:00 PM the night before the race. Racers will be grouped by category and start times randomly assigned within each group. Special start time requests will not be granted – please don’t ask.
Note: Do not ride past the ranger station during your warm-up (the Forest Service may count you as a racer and we may exceed our race permit cap). Please turn around 200 yards before the ranger station during your warmup.
Please arrive at the start queue at least 2 minutes prior to your start time.
We will not have a bike holder at the start line. All racers must start from a full stop with one foot on the ground.
Drafting is not allowed in time trial races and will result in a time penalty.
DO NOT BIKE PAST THE FINISH TO BUS TURN AROUND. DOING SO WILL JEOPARDIZE OUR PERMITS!

Gold Rush Criterium Omnium
2026-08-19 08:00 - 2026-08-23 17:00
5 CRITS. 5 DAYS. 5 CHANCES TO WIN.

⛏️ $20,000 Total Prize Purse with Equal Payouts for men & women
⛏️ $500 Prize Purse for Pro 1/2/3 mens Omnium winner (paid 5 deep)
⛏️ $500 Prize Purse for Pro 1/2/3 womens Omnium winner (paid 5 deep)
⛏️ Merchandise Prize Purse for Masters Men & Women Omnium winners (paid 3 deep)
⛏️ All Crits within 1.5 hrs drive from the Denver metro area
⛏️ USA Cycling sanctioned and officiated race series

Lake City Alpine 50 Mountain Bike Race
2026-08-22 08:00 - 17:00 | Lake City, CO, Lake City, CO
The Highest Elevation One-Day Mountain Bike Race in the United States. The course hits 12,940 feet of alpine goodness.
The Lake City Alpine 50 is an epic, 50-mile, alpine endurance bike race with 6,000+ feet of climbing.
The course heads out from downtown Lake City, Colorado onto Highway 149 towards Lake San Cristobal. Lake City’s namesake was formed by a rare natural earthflow called the Slumgullion Slide, which blocked the Lake Fork of the Gunnison River, creating the second-largest natural lake in Colorado and one of the most beautiful lakes in the entire state of Colorado.

Rumble at the Ranch 6 Hour MTB Relay
2026-08-23 07:30 - 13:30 | Highlands Ranch, CO, Highlands Ranch, United States
Rumble at the Ranch is a 6-hour mountain bike relay for teams of two or three riders as well as solo racers. The race takes place on the amazing Highlands Ranch Backcountry singletrack and double-track trail system. Teams will see how many laps of the 7.6-mile loop they can complete in 6 hours.

Gold Rush Criterium Omnium - Longmont
2026-08-23 08:00 - 17:00 | Longmont, CO
Five Crits. Five Days. Five Chances.
Introducing the inaugural Gold Rush Omnium — five criteriums in one week across Colorado, all within 90 minutes of Denver. With a $20,000 total prize purse and equal prize money for men and women, this is your chance to race hard and win big.
Host cities include Louisville, Golden, Longmont, and Littleton, with discounted hotel rates for out-of-town racers.
Race. Win. Repeat.

Trestle Gravity Series - Super Downhill
2026-09-04 | Winter Park, CO, Winter Park, CO, United States
Super Downhill (Super-D) is the perfect mix of downhill and cross-country racing packaged together into one fun 6-12 minute run with a mix of downhill and flat or minor uphill sections. This event will take place in the late afternoon/evening.

Trestle Gravity Series - Downhill 2
2026-09-05 | Winter Park, CO, Winter Park, CO, United States
Downhill is a race that takes place on steep, rough terrain that often feature jumps, drops, rock gardens and other obstacles. This is also a timed event and one of the spectator favorites. Longer travel bikes are recommended.

Trestle Gravity Series - Air Downhill 2
2026-09-06 | Winter Park, CO, Winter Park, CO, United States
This is a timed event and one of the most attended races. If you’re wanting fast, flow and fun, Air Downhill is where it’s at.

Battle of the Grommets September
2026-09-07 | Winter Park, CO, Winter Park, CO, United States
Battle of the Grommets™ Junior Gravity Races are a great introduction to downhill / gravity mountain bike racing for those age 15 and under! Modeled after the long-standing winter Battle of the Grommets™ Slopestyle competitions for skiers and snowboarders, we’re proud to offer a summer version of this popular, grass-roots competition for young riders!
The course flows smoothly with light bumps. All levels are welcome.

Chatfield Time Trial Series
2026-09-09, 2026-09-16, 2026-09-23 | Chatfield State Park, 11500 N. Roxborough Park Rd., Littleton, 80125, United States
Come ride with Team Cobras this Fall! Join our three-week series on September 9, 16, and 23.
Challenge yourself on a fast, scenic 10.9-mile course around beautiful Chatfield Lake! Whether you’re a seasoned racer or new to time trials, this series welcomes all abilities. Enjoy smooth roads, wide shoulders, and breathtaking views at every turn. Early September brings pleasant, sunny days and cool, comfortable evenings—perfect conditions for unforgettable racing.
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Couch to Cross
2026-09-09 | Jefferson County Fairgrounds, 15200 West 6th Avenue, Golden, CO, 80401, United States
In an effort to keep with the tradition of Fall weeknight CX racing, we are working with JeffCo Fairgrounds to bring that same vibe. Come race Couch to Cross on September 3. You will be treated to an amazing race scene, exciting atmosphere, professional timing, challenging terrain, and a volunteer group that is second to none.

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Durango Derby MTB Stage Race
2026-09-12 08:00 - 15:00 | Durango, CO
Now heading into our third year, Durango Derby is excited to continue to evolve the cross-country MTB racing experience.
Think epic MTB stage race, but condensed into one single day of racing.
The race stages are crafted from a mix of premium single track showcasing all three of Durango, Colorado’s in-town trail systems. In between the race stages, the routes feature untimed segments that take riders on a journey throughout downtown.

Mane Event
2026-09-18 - 2026-09-19 | Koltiska Pumpkin Patch, 120 Cat Creek Rd, Sheridan, WY, 82801, United States
Experience the untamed beauty of Wyoming at the Mane Event Gravel Grinder! Choose your adventure across 25, 32, 54, or 78 miles of mostly gravel roads that wind through rolling ranch land and sweeping foothills north and east of Sheridan. Starting and finishing at the Koltiska Pumpkin Patch, riders are treated to well-marked routes, full support, spirited camaraderie, and aid stations with everything you’ll need along the way. Whether you’re a seasoned racer or new to gravel, every mile offers a friendly challenge and the welcoming community vibe that makes this event unique. Proceeds benefit local nonprofits—join Sheridan’s signature fall ride and discover why gravel adventures in Wyoming are truly one-of-a-kind

Grassroots Gravel
2026-10-09 - 2026-10-10 | Pueblo, CO, Pueblo, United States
Grassroots Gravel features course distances for everyone. All of our routes are on well-maintained roads. Legendary courses, support, and atmosphere for everyone. We’ve got space for every person and every pace. Grassroots Gravel powered by UCHealth features legendary routes, fully-supported courses, fantastic folks, industry-leading race timing, and a core focus to build an experience that welcomes everyone.
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Wild West CX
2026-11-05 | Jefferson County Fairgrounds, 15200 West 6th Avenue, Golden, CO, 80401, United States
The Colorado State Cyclocross championship will be at a favorite venue, the Jefferson County Fairgrounds! Come race CX on December 6. You will be treated to an amazing race scene, exciting atmosphere, professional timing, challenging terrain, and a volunteer group that is second to none.

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