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Routes
Gravel rides
United States
Colorado
Boulder County

Gunbarrel

The best gravel rides around Gunbarrel

4.6

(71)

2,230

riders

119

rides

Gravel biking around Gunbarrel, Colorado, offers diverse terrain ranging from flat plains to the foothills of the Rocky Mountains. The region features extensive networks of paths and open spaces, providing varied surfaces for gravel cyclists. Riders can explore routes around cottonwood-ringed reservoirs, farmlands, and along the Boulder Creek Path. This landscape provides views of the iconic Flatirons and Haystack Mountain, with options from smooth dirt paths to more challenging climbs.

Best gravel bike trails around Gunbarrel

  • The most popular gravel…

Last updated: May 1, 2026

4.5

(4)

100

riders

#1.

Boulder Reservoir – Lefthand Trail loop from 63rd St & Nautilus Dr

60.8km

03:43

380m

380m

Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Moderate

Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

Easy
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Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate
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Popular around Gunbarrel

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Tips from the Community

mtm05005
May 2, 2025, Lagerman Agricultural Preserve Singletrack Trails

The Lagerman Agricultural Preserve has about 7 miles of singletrack that takes you through the nature preserve. The route around the large reservoir is one of the more popular trails in the park.

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Great viewpoint along the LOBO Regional Trail. There is a bench for you to stop and take a break to enjoy the vistas.

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Could love more on the trails with soft and dry graves, some portion has hard rocks.

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Though the mud after days of sunshine after winter storm became smooth and look nice. However, there are still cars going through and the washboards could be so bumpy. Especially, the wind speed was averaged around 15mph on that day. It might be hard to write this part.

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Boulder Valley Ranch Pond, nestled in a serene natural landscape outside Boulder, captivates with its tranquil waters and surrounding wilderness. A haven for diverse wildlife, it offers a peaceful retreat for nature enthusiasts.

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The Lagerman Agricultural Preserve and Reservoir is a small nature preserve that birders, boaters, picnickers, bikers, runners, and dog-walkers can all enjoy. You get great views of the foothills over farms and fields as you ride down well-graded crushed gravel and dirt roads.

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This mural is barely visible from the road. It's audience is cyclists and pedestrians using the bikeway underpass.

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The Boulder Valley Ranch Pond is one of two bodies of water within Boulder Valley Ranch (the other is Mesa Reservoir). This smaller reservoir has a beautiful mountain backdrop and is a good place to cool off the pets on warmer days, as a lot of the trails in the Ranch area don't offer much shade.

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Frequently Asked Questions

What kind of terrain and difficulty can I expect on Gunbarrel's gravel trails?

Gunbarrel offers a diverse range of gravel biking terrain, from flat plains to rolling foothills leading towards the Rocky Mountains. You'll find routes with smooth dirt paths, non-technical double track, and some easy singletrack. The area features 4 easy, 6 moderate, and 3 difficult routes, catering to various skill levels. For instance, the Boulder Reservoir – Lefthand Trail loop from Gunbarrel is a moderate ride offering expansive views and varied terrain.

Are there family-friendly gravel biking options in Gunbarrel?

Yes, Gunbarrel has several family-friendly gravel biking options, particularly routes that are mostly flat or have gentle inclines. The area's extensive network of paths and open spaces includes easy trails suitable for families. For example, the Boulder Reservoir – Coot Lake Dock loop from Gunbarrel is an easy 15.4-mile path with scenic views around the reservoir and Coot Lake, perfect for a family outing.

What are some scenic viewpoints or natural features I can see while gravel biking in Gunbarrel?

Gunbarrel's gravel trails offer stunning views of the foothills and the iconic Flatirons. You can also enjoy picturesque landscapes with cottonwood-ringed reservoirs and the distinctive Haystack Mountain. Notable viewpoints include the Davidson Mesa Overlook, offering sweeping views of the Flatirons and Boulder. Many routes also pass by natural features like Twin Lakes and the Boulder Reservoir.

Are there any good circular gravel bike routes around Gunbarrel?

Yes, many of the gravel routes in Gunbarrel are designed as loops, allowing you to start and end in the same location. A popular option is the Twin Lakes – Boulder Reservoir loop from Gunbarrel, a 22.2-mile trail that takes you through Twin Lakes Open Space and past Boulder Reservoir. Another great circular route is the Pella Crossing – Twin Lakes loop from Gunbarrel, which covers nearly 50 km.

What do other gravel bikers say about the trails in Gunbarrel?

The gravel biking routes around Gunbarrel are highly regarded by the komoot community, with an average score of 4.6 stars from over 50 reviews. Riders often praise the diverse terrain, ranging from flat plains to rolling foothills, and the expansive views of the Rocky Mountains and iconic Flatirons. The variety of routes, from easy to challenging, also receives positive feedback.

What is the best time of year for gravel biking in Gunbarrel?

Gunbarrel's gravel biking routes are generally accessible year-round, offering a wide variety of terrain. However, spring and fall often provide the most comfortable temperatures and vibrant scenery. While winter riding is possible, be mindful of potential snow or ice, especially on trails closer to the foothills. Summer can be warm, so early morning or late afternoon rides are often preferred.

Are there more challenging gravel bike routes for experienced riders?

Yes, for experienced riders seeking a challenge, Gunbarrel offers routes that venture into more mountainous areas. While many trails are moderate, there are 3 difficult routes available. For a more challenging, lengthy, and climbing gravel route, consider exploring areas like Fourmile Canyon to Boulder Canyon, which quickly takes riders into the mountains with forest-framed peak views and access to dirt roads.

Can I bring my dog on the gravel trails in Gunbarrel?

Boulder County Open Space, which manages many of the trails around Gunbarrel, has specific regulations regarding dogs. Generally, dogs are permitted on many trails but must be on a leash. Some areas may have seasonal restrictions or require a Voice and Sight Tag. It's always best to check the specific regulations for the trail you plan to ride before heading out with your dog.

Where can I find parking for gravel bike trails in Gunbarrel?

Many of the trailheads and open spaces around Gunbarrel offer designated parking areas. For routes like those around Boulder Reservoir or Twin Lakes Open Space, you'll typically find parking available. Specific trailheads, such as those accessing the East Boulder Trails or the Lobo Trail, also provide parking facilities. It's advisable to check the starting point of your chosen route for detailed parking information.

Are there cafes or places to eat near the gravel bike trails in Gunbarrel?

Gunbarrel, being a suburban area, has various amenities including cafes and restaurants. While specific establishments might not be directly on every trail, you'll find options within a short ride or drive from many trail access points. The town of Boulder, just a short distance away, also offers a wide array of dining choices for pre- or post-ride refreshments.

Are there trails that feature lakes or reservoirs?

Absolutely! Many gravel routes in Gunbarrel prominently feature lakes and reservoirs, offering beautiful waterside scenery. The Boulder Reservoir and Twin Lakes are central to several popular routes. For example, the Coot Lake Dock – Lefthand Trail loop from 63rd St & Twin Lakes Rd provides scenic views around Coot Lake and the reservoir.

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