4.6
(93)
2,629
riders
6
rides
Gravel biking around Gunbarrel, Colorado, offers extensive opportunities across diverse natural landscapes with views of the Rocky Mountains. The area features open spaces, lakes, and reservoirs, providing a blend of suburban tranquility and access to nature. The terrain includes rolling grasslands, crushed gravel paths, and connections to a larger network of multi-use trails. This region is characterized by its accessible trail networks designed to minimize traffic encounters for cyclists.
Last updated: May 11, 2026
4.5
(4)
100
riders
60.8km
03:43
380m
380m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(3)
30
riders
24.8km
01:31
130m
130m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

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21
riders
39.6km
02:31
200m
200m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
15
riders
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
8
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Gunbarrel
Stay on the highest point of the path - you’ll find less gravel
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This is the intersection of the Saint Vrain Greenway and Left Hand Creek Trail Trailhead. The Left Hand Creek Trail will take you all the way into Boulder, so it is a great way to go from Union Reservoir into the city.
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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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Komoot offers 5 curated traffic-free gravel bike routes around Gunbarrel, suitable for various skill levels. These include 2 easy and 3 moderate tours, ensuring a great experience away from vehicle traffic.
Yes, Gunbarrel offers several easy, traffic-free gravel routes perfect for beginners or a family outing. A great option is the Boulder Reservoir – Coot Lake Dock loop from Gunbarrel, which is 24.8 km long and features minimal elevation gain. Another excellent choice is the Left Hand Creek Park – Mural of the Full Moon Wolves loop, offering a gentle 30.7 km ride.
The traffic-free gravel trails around Gunbarrel offer a diverse mix of terrain, primarily crushed gravel paths and dirt roads. You'll find routes that wind through open spaces, alongside lakes like Twin Lakes and Boulder Reservoir, and provide scenic views of the Front Range and Flatirons. Some sections, like the 51st Street (Gravel to Eagle Trailhead), offer fun downhill segments leading to short, punchy hills.
Many traffic-free gravel routes in Gunbarrel offer stunning natural features and landmarks. You can explore areas like Twin Lakes Open Space, Boulder Reservoir, and Coot Lake. Keep an eye out for the Cottonwood Trail, which follows a creek, and enjoy expansive views from the Davidson Mesa Overlook. The Gunbarrel Hill Viewpoint also provides excellent vistas of the surrounding landscape.
For experienced riders seeking longer, traffic-free gravel loops, consider the Boulder Reservoir – Lefthand Trail loop from 63rd St & Nautilus Dr. This moderate 60.8 km route features over 380 meters of elevation gain, connecting various scenic gravel paths. Another option is the Davidson Mesa Overlook – South Boulder Creek Trail loop, a challenging 67.3 km ride with over 420 meters of climbing.
The traffic-free gravel trails in Gunbarrel are highly rated by the komoot community, with an average score of 4.59 out of 5 stars from 74 reviews. Riders often praise the quiet, scenic routes that provide a true escape from traffic, the diverse landscapes including lakes and open fields, and the excellent connectivity to a wider network of trails.
Yes, all the traffic-free gravel routes highlighted in this guide are circular loops designed to keep you away from main roads as much as possible. For example, the Coot Lake Dock – Lefthand Trail loop offers a 38.5 km circular ride through natural areas, minimizing road crossings.
Yes, the area is well-equipped for cyclists. The Davidson Mesa Overlook, which is part of some routes, conveniently includes a public bike repair station. Additionally, Gunbarrel and nearby Boulder offer various bike shops and amenities to support your ride.
While these routes are designed to be traffic-free, the best time to enjoy gravel biking in Gunbarrel for pleasant weather and fewer people on the trails is typically spring and fall. The mild temperatures and vibrant scenery make for ideal riding conditions. Summer mornings are also excellent before the heat sets in, and winter can be beautiful on clear days, though some sections might be muddy or icy.
Gunbarrel's traffic-free gravel trails offer excellent connectivity to a larger network. You'll find routes that link to the Boulder Reservoir, Coot Lake, and Tom Watson Park via multi-use gravel paths. The area also connects to the LoBo Trail and the East Boulder/Gunbarrel Trail, allowing for extended rides and exploration of the wider Boulder County open space system.


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