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Colorado
Boulder County

Boulder

The best MTB trails around Boulder

4.3

(21)

1,421

riders

102

rides

Mountain biking around Boulder features a diverse landscape at the base of the Rocky Mountains, blending expansive plains with challenging mountain terrain. The region is characterized by iconic red sandstone formations like the Flatirons and extensive networks of trails winding through forests and open spaces. This varied topography provides a wide array of mountain biking experiences.

Best mountain bike trails in Boulder

  • The most popular mountain bike trail is Boulder Valley Ranch Loop, an easy 9.0 miles (14.5 km)…

Last updated: July 21, 2026

5.0

(2)

8

riders

#1.

Boulder Valley Ranch Loop

14.5km

01:11

110m

110m

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

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Easy

4

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Hard mountain bike ride. Great for any fitness level. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard
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Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

Moderate

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate
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Popular around Boulder

My Boulder variety pack — MTB and gravel gems in the Front Range

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My Boulder variety pack — MTB and gravel gems in the Front Range

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Tips from the Community

Draxula
May 24, 2025, South Boulder Creek Trail (Gravel)

Stay on the highest point of the path - you’ll find less gravel

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Alex
August 21, 2024, Spring Brook Loop

The Spring Brook Loop is a great introduction to mountain biking in Colorado’s Front Range, offering a mix of technical challenges and awesome views. The trail features a series of rocky step-ups, rolling singletrack, and winding paths through forests. The ride is mostly sun-exposed, so pacing water is important, and the trail is shared and popular with hikers, runners, and other bikers. Highlights include the descent through Doudy Draw and the twisty, wooded sections of the Spring Brook Loop. The trail loops back, offering expansive views of the Flatirons before returning to the starting point.

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The Greenbelt Plateau Trail starts at a trailhead off Highway 93 and Highway 128 and offers an easy singletrack ride perfect for novice riders. It connects with the Greenbelt Connector, allowing riders to access the western part of the Marshall Mesa trail system. On the northern end, the trail splits; staying west leads to the Community Ditch Trail near Highway 93. This section is also a safe route north without having to ride along the busy Highway 93.

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An impressive rock formation just on the outskirts of Boulder.

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The Boulder Adventure Lodge (also known as the A-Lodge) is the closest hostel/camping area to downtown Boulder. Located just up Fourmile Canyon, the A-lodge hosts an entrance to the Betasso Preserve, which is a collection of multi use trails in the Boulder Open Space and Mountain Trails area.

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Zachary
November 17, 2023, Fourmile Creek Path

The paved path hwinds along the creek and through Fourmile Canyon. You get great views of the foothills from here.

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Zachary
November 17, 2023, Flatirons Vista

The trail is aptly named — looking west the iconic silhouettes of the Flatirons loom over the horizon. The trail runs through an open field and is wide gravel. Keep an eye out for prairie dogs!

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Zachary
November 17, 2023, Spring Brook loop

The trail is a nontechnical singletrack with amazing views that wraps around the rim of the foothills and dives into the forest on its west side where you can cross the canal and connect to the trails in the Flatirons.

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Frequently Asked Questions

How many mountain bike trails are available in Boulder?

Boulder offers a vast network of mountain bike trails, with nearly 90 routes available on komoot. The city and surrounding county boast over 100 miles of trails specifically open to mountain bikes, catering to a wide range of abilities.

Are there easy mountain bike trails in Boulder suitable for beginners?

Yes, Boulder has over 25 easy mountain bike routes. For a gentle introduction, consider the Left Hand Trail – Boulder Valley Ranch Pond loop from Broadway & Yarmouth Ave, which offers mellow riding. The Boulder Valley Ranch area, including trails like North Sky, is known for its beginner-friendly paths with minimal elevation change or technical features. Trails at Mud Lake are also wide and smooth, making them suitable for new riders.

What are some challenging mountain bike routes for advanced riders in Boulder?

For experienced riders seeking a challenge, Boulder offers several difficult routes. The Betasso Preserve – Chapman Drive Trailhead loop from Boulder features a mix of technical challenges with rocky sections and winding singletrack. Another highly technical option is the Walker Ranch Loop, known for its steep climbs, rock fins, and amazing views, making it one of the hardest 8 miles of mountain biking in Boulder.

Which mountain bike trails offer the best scenic views in Boulder?

Many trails in Boulder provide stunning views, often featuring the iconic Flatirons. The Marshall Mesa Loop offers diverse terrain with excellent views of these red sandstone formations. Additionally, trails within the Heil Valley Ranch provide lovely vistas over the valley, while the challenging Walker Ranch Loop rewards riders with amazing panoramic scenery.

Are there any family-friendly mountain biking options in Boulder?

For families, the Boulder Valley Ranch area is an excellent choice, offering mellow and gentle beginner rides. The North Sky trail, in particular, is beginner-friendly with minimal elevation change. Valmont Bike Park is also a fantastic resource, providing features for all types of riders, from strider bike trails for the youngest to areas for skill improvement.

What is the best season for mountain biking in Boulder?

Boulder's mountain biking season generally runs from spring through fall, with pleasant temperatures and dry conditions. However, the diverse terrain means some trails may be accessible year-round. It's always advisable to check local trail conditions before heading out, especially after snow or heavy rain, as some trails may have seasonal closures or restrictions.

Are there any mountain bike trails that are circular loops in Boulder?

Yes, many mountain bike trails in Boulder are designed as circular loops. Examples include the Boulder Valley Ranch Loop, the Greenbelt Plateau Trail – Community Ditch Trail loop from Boulder, and the Betasso Preserve loops (Canyon and Benjamin Loops). These loops offer varied terrain and allow riders to return to their starting point without retracing their steps.

What unique natural features or landmarks can I see while mountain biking in Boulder?

Boulder's landscape is rich with natural beauty. You'll frequently encounter the dramatic red sandstone formations known as the Flatirons, which serve as a stunning backdrop to many trails. Other notable features include the otherworldly sandstone spires of Red Rocks. For specific viewpoints, consider visiting Davidson Mesa Overlook, which offers expansive views.

Are there any dedicated bike parks in Boulder for skill development?

Yes, Boulder is home to the excellent Valmont Bike Park. This park is an outstanding resource for riders of all levels, from beginners to those looking to hone advanced skills. It features a variety of terrain, including strider bike trails, pump tracks, dirt jumps, and technical sections, making it ideal for practice and progression. You can even try a Valmont Bike Park Hot Lap.

What do other mountain bikers enjoy most about mountain biking in Boulder?

The mountain biking experience in Boulder is highly rated by the komoot community, with an average score of 4.7 stars from over 20 reviews. Riders frequently praise the diverse terrain, from expansive plains to challenging mountain slopes, and the stunning views of the Flatirons. The extensive and well-maintained trail network, offering options for all ability levels, is also a common highlight.

Where can I find information about trail conditions and regulations for mountain biking in Boulder?

For the most up-to-date information on trail conditions, closures, and specific regulations (such as directional use or restricted days for mountain biking), it's best to consult official local resources. Boulder County Open Space provides detailed information on their website: bouldercounty.gov. This is especially important for areas like Betasso Preserve, which has alternating directional use and specific days when mountain biking is restricted.

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