Colorado’s passion for cycling is legendary, with Boulder standing out as the state’s ultimate hub for enthusiasts. From its extensive network of city bike paths to the exhilarating canyon climbs, cycling isn’t just a pastime here—it’s ingrained in the city’s identity. With breathtaking views and a plethora of renowned routes, Boulder offers a cycling experience like no other, ensuring that no ride is ever the same.
One standout challenge is Mount Blue Sky (formerly Mt. Evans), boasting the title of the highest paved road in North America. This grueling 45 km ascent to 4307 m above sea level isn’t for the faint-hearted, though a midway parking lot offers respite for the less adventurous. Boulder also caters to casual cyclists with its bike-sharing program, boasting around 50 kiosks scattered throughout the city. Riders can conveniently grab a bike for short jaunts, exploring the scenic landscapes before returning it to any kiosk when done.
When to Go
Boulder, situated in the high desert at an altitude of 1655 meters above sea level, enjoys a mild climate characterized by low humidity during both summer and winter.
July typically sees the warmest temperatures, reaching an average daytime high of 30°C, though evenings may require a sweater due to occasional dips in temperature. Conversely, January marks the coldest month, with an average daytime high of 7°C. Snowfall averages 226 inches annually, necessitating visitors to the Rocky Mountains to dress in layers to adapt to varying temperatures.
Spring brings forth a vibrant display of tulips along downtown Pearl Street and flourishing hiking trails adorned with delicate wildflowers. Despite temperatures soaring into the 80s, snow in May is not uncommon, emphasizing the need for preparedness.
Summer unveils Boulder’s natural beauty with lush trees and clear blue skies, while autumn paints the landscape in gold, red, and yellow hues. Although snowfall is infrequent in winter, Boulder offers many activities to keep visitors engaged should the occasion arise.
Top Boulder Cycling Routes
Boulder to Carter Lake Loop
Distance: 121.2 km with 960 m elevation gain
Starting your journey from the picturesque downtown Boulder, embark on a cycling adventure along the majestic Colorado Rockies front range. Traverse through the serene Boulder flats, soaking in the beauty of the surrounding landscape as you make your way towards the inspiring Carter Lake Reservoir.
Along the way, be captivated by the breathtaking vistas of the towering Rockies that serve as a stunning backdrop throughout your entire ride. Experience the unparalleled beauty of this scenic route, which has enticed numerous professional riders to make this area their home base. Come and discover for yourself why this cycling heaven is cherished by so many enthusiasts and professionals alike.
Boulder Weekend Loop
Distance: 124.9 km with 3420 elevation gain
Embark on an exhilarating weekend loop adventure starting and ending in the bike-friendly city of Boulder, Colorado. This thrilling journey is defined by challenging long climbs, exhilarating fast descents, and refreshing cool summer nights, offering an unforgettable experience for cycling enthusiasts.
With Boulder as your starting point, venture into the Front Range mountains, where the stunning scenery and invigorating terrain await. Whether you’re seeking an adrenaline-pumping challenge or a peaceful escape into nature, this weekend loop promises an unforgettable cycling experience for anyone with the legs and lungs to conquer the mountains.
El Gravelancho – A Ride to Gold Hill
Distance: 58.2 km with 1537 m elevation gain
Embark on a thrilling cycling journey from Four Mile to Wall Street, then onto the scenic Switzerland Trail, before descending via Gold Hill Rd with detours through Dixon and Rim Rd. Experience the rush of adrenaline as you conquer challenging ascents and enjoy exhilarating descents against the backdrop of breathtaking mountain scenery.
For those seeking an extra challenge, take the bonus climb up Poorman to Sunshine before looping back to Sports Garage via Pine. This carefully crafted route promises an unforgettable adventure for cyclists of all levels, offering a perfect blend of excitement and natural beauty in the heart of Colorado’s majestic landscape. Gear up and get ready to explore the best of Boulder’s cycling paradise.
Morgul – Bismark
Distance: 24.5 km with 335 m elevation gain
Indulge in a delightful, leisurely, single-track adventure following the iconic Morgul Bismark road cycling route. This fun-filled trail promises an enjoyable experience for riders of all skill levels, offering an easygoing journey through picturesque landscapes and captivating terrain.
As you pedal along the trail, immerse yourself in the beauty of the surrounding scenery, taking in the sights and sounds of nature at every turn. Whether you’re a seasoned cyclist looking for a relaxing ride or a beginner seeking an introduction to off-road biking, this charming single track provides the perfect opportunity to explore the renowned Morgul Bismark route from a fresh perspective.
Boulder to Mount Blue Sky Summit
Distance: 110.1 km with 3875 elevation gain
The Mount Blue Sky Scenic Byway, formerly known as Mount Evans, ascends over 2133.6 m in just 45 km, reaching a height of 4307 m. At the peak, you’ll be treated to breathtaking views of the entire Front Range, but don’t miss the intricate details. This lofty perch above the tree line offers a unique mix of resilient wildflowers, lichens, grasses, and lively wildlife. It’s a prime spot in Colorado to spot majestic bighorn sheep. However, regardless of the season, be prepared for ever-changing weather conditions, including wind, rain, lightning, snow, and hail.
Bike-friendly Hotels in Boulder
Basecamp Boulder: 2020 Arapahoe Ave, Boulder, CO, United States, Colorado link | facebook
Colorado Chautauqua Cottages: 900 Baseline Road, Boulder, CO 80302 link | Instagram
Where to eat
The Laughing Goat: 1709 Pearl St, Boulder, Colorado 80302 link | Instagram
Snooze AM Eatery: 1617 Pearl St, Boulder, CO 80302 link | Instagram
Bike rentals
Full Cycle Bikes & Colorado Multisport: 2355 30th Street, Boulder, CO 80301 link | Instagram
University Bicycles: 839 Pearl Street, Boulder, CO 80302 link | Instagram
If you’re seeking extra paths in Boulder, Colorado or require guidance for cycling elsewhere, drop us a direct message on Instagram, and we’ll prepare a tailored guide just for you.
Read more about cycling in the US:
A Guide to Cycling Chicago: The Coolest Rides and More
Cycling San Francisco: The Essentials
A Cyclist’s Guide to Santa Monica, California
12 of the World’s Most Spectacular Long-Distance Cycling Routes