5.0
(1)
85
riders
2
rides
Gravel biking in Rabbit Mountain Open Space offers routes through a transitional landscape where the Great Plains meet the Rocky Mountain Front Range. The area features a mix of grasslands, shrublands, and open spaces, providing expansive views of the foothills and surrounding agricultural areas. Trails often consist of crushed gravel and dirt roads, suitable for gravel bikes. This region provides varied terrain for riders seeking no traffic gravel bike trails.
Last updated: May 14, 2026
6
riders
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
29
riders
26.6km
01:37
160m
160m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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11
riders
50.5km
03:33
410m
410m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
12
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Rabbit Mountain Open Space
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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The Open Sky Loop is a popular trail in the Lagerman Agricultural Preserve. It provides foot and cycle traffic a nice way to circumnavigate the preserve to enjoy the wildlife and landscape views.
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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 hike lightly-graded crushed gravel and dirt roads.
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Could love more on the trails with soft and dry graves, some portion has hard rocks.
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The Sandstone Ranch Park in Longmont, Colorado, is a vast recreational and natural area that offers a variety of amenities and activities. It spans over 313 acres, featuring athletic fields, playgrounds, picnic areas, and extensive walking and biking trails, including the St. Vrain River Greenway. The park also includes historical sites, such as the Sandstone Ranch Visitors & Learning Center, which offers educational programs about the local environment and history. Additionally, the park hosts community events and sports programs, making it a popular destination for locals and visitors alike.
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Depending on which direction you're riding you may just be starting your ride, or just about to finish. Either way this bench makes a good spot to have a quick rest or gear check, before taking in the view and then continuing on your way.
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The komoot community has curated 5 traffic-free gravel bike routes in the broader Rabbit Mountain Open Space area. These routes offer a mix of easy and moderate rides, perfect for exploring the scenic landscapes without vehicle interference.
You can expect a diverse mix of terrain. While Rabbit Mountain itself features multi-use trails with some singletrack, doubletrack, and fire roads, the surrounding area offers well-graded crushed gravel and dirt roads. These routes often provide excellent views of the foothills, farms, and fields, connecting to other trails like the Saint Vrain Greenway and Left Hand Creek Trail.
Yes, there are several easy routes suitable for families. For instance, the McIntosh Lake – McIntosh Lake loop from Longmont is a relatively short and flat option. Another easy choice is The Mountain Fountain – Pella Crossing loop from Agricultural Heritage Museum, offering a pleasant ride through the landscape.
For those seeking a longer challenge, the Lefthand Trail loop from Seagate Technology is a moderate 50.6 km route with significant elevation gain. Another excellent option is the Gunbarrel Hill Viewpoint – Sandstone Ranch Community Park loop from Main & 21st, which covers 65.6 km and offers varied terrain.
The area is generally enjoyable for gravel biking during spring, summer, and fall. Spring brings wildflowers, while fall offers pleasant temperatures and changing foliage. Summer can be warm, so early morning or late afternoon rides are often preferred. Always check local weather conditions before heading out.
Absolutely. The region where the Great Plains meet the Rocky Mountain Front Range offers expansive views. Routes often pass by agricultural fields with the foothills as a backdrop. While specific highlights for these routes aren't detailed, the broader Rabbit Mountain area is known for its unique geology and views, such as those from the Little Thompson Overlook Trail. The Gunbarrel Hill Viewpoint – Sandstone Ranch Community Park loop specifically mentions a viewpoint in its name.
While Rabbit Mountain Open Space itself has specific rules regarding dogs (often requiring leashes and prohibiting them in certain areas), the gravel routes in the surrounding area may have different regulations. It's always best to check the specific rules for each trail or preserve you plan to visit. For example, some open spaces allow dogs on leash, while others may not.
Many of the routes start from locations with designated parking. For instance, The Mountain Fountain – Pella Crossing loop starts from the Agricultural Heritage Museum, which typically has parking. The Open Sky Loop begins near the Lagerman Preserve Trailhead. Rabbit Mountain Open Space itself has a large parking lot at its trailhead with amenities. Always verify parking availability and any potential fees before your ride.
The towns of Longmont, Lyons, and Hygiene are relatively close to many of these routes and offer various cafes, restaurants, and pubs where you can refuel after your ride. Depending on your chosen route, you might pass through or near these communities, making it convenient to find refreshments.
The transitional zone where the Great Plains meet the Rocky Mountain Front Range supports diverse wildlife. You might spot prairie dogs, mule deer, and various bird species, including falcons, hawks, and even golden eagles, especially in areas like the Eagle Wind Loop within Rabbit Mountain Open Space. Always maintain a respectful distance from wildlife.
Yes, all the routes listed in this guide are circular loops, designed to bring you back to your starting point. This includes routes like the McIntosh Lake loop and the Open Sky Loop, offering convenient round trips for your gravel biking adventure.


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