5.0
(3)
41
riders
5
rides
Gravel biking around St. Ann Highlands offers diverse landscapes, characterized by mountainous terrain, mixed-grass prairies, and dense forests. This varied topography provides extensive trail networks suitable for gravel cyclists. Routes often feature rolling hills and views of the surrounding natural environment. The region's trails include packed and loose gravel surfaces, alongside rugged doubletrack sections.
Last updated: July 12, 2026
5.0
(1)
11
riders
19.3km
01:40
370m
370m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
12
riders
45.9km
04:08
1,300m
1,310m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(1)
7
riders
26.2km
01:34
300m
300m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
5
riders
27.4km
02:12
670m
670m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
riders
15.4km
01:21
240m
240m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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A very unexpected tall brick/stone tower in the middle of the forest.
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The Assay Office Museum contains many tools and implements used in the assaying process, as well as furniture and artwork owned by the Bailey family. The museum is open the third Saturday of the month May through October. https://bouldercounty.gov/open-space/education/museums/assay-office/
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Country Road 126 is a dirt-packed road that serves as a roadway for cars, a double track for bikers, and a trail for walkers. The road goes through pine trees, birch trees, and under power lines.
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There is a sizeable parking lot here with restrooms. From here you can access the network of nontechnical wooded trails and roads in Mud Lake Open Space.
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There is a large packed gravel lot here with restrooms and access to numerous dirt roads and singletrack trails.
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Sunshine Canyon is a popular ride that that takes you straight from downtown Boulder up into the foothills past popular hikes like Mount Sanitas and Lions Lair. This upper section of Sunshine Canyon is gravel, but it is generally well-graded, and hard packed; it is frequently completed by local cyclists on road bikes. The only place where the gravel can be a little looser and chunkier is toward the top of the canyon by Gold Hill, so be aware when ascending or descending.
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The Switzerland Trail follows the remains of a narrow gauge railroad, that ran from the 1890's until 1919. The scenery is stunning and the trail is smooth and fast for the most part.
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There are 5 curated gravel bike routes in St. Ann Highlands, offering a range of experiences from moderate to difficult. These routes allow you to explore the diverse landscapes of the region.
Yes, several routes are suitable for those new to gravel biking or looking for a less strenuous ride. The Mud Lake Trailhead loop from Saint Anton Highlands is a moderate 15.4 km route with around 240 meters of elevation gain, offering a pleasant introduction to the area's terrain. Another good option is the Country Road 126 loop from Nederland, which is 19.3 km long with 366 meters of ascent.
For experienced gravel bikers seeking a challenge, the region offers routes with significant elevation and distance. Consider the Gold Hill General Store – Switzerland Trail loop from Gold Hill Station, a difficult 45.9 km ride with over 1300 meters of climbing. Another demanding option is the Switzerland Trail – Gold Hill General Store loop from Wallstreet, which covers 27.4 km with 668 meters of elevation gain.
While the guide primarily features moderate to difficult routes, the shorter, moderate trails like the Mud Lake Trailhead loop from Saint Anton Highlands could be suitable for families with older children who are comfortable with gravel surfaces and some elevation. Always check the route details for specific terrain and difficulty before heading out with family.
The St. Ann Highlands, being a mountainous region, offers varied conditions. Generally, late spring through early autumn provides the most favorable weather for gravel biking, with milder temperatures and less chance of snow. However, conditions can change rapidly, so always check the local forecast before your ride.
Yes, all the routes listed in this guide are circular, allowing you to start and end at the same point. For example, the Public toilet in Rollinsville – Tolland loop from Rollinsville is a 26.2 km circular route, and the Mud Lake Trailhead loop from Saint Anton Highlands is a shorter circular option.
The St. Ann Highlands region offers a diverse backdrop for gravel biking, characterized by mountainous terrain, mixed-grass prairies, and dense forests. You'll encounter varied topography, from open spaces with views of jagged peaks and rolling hills to trails winding through natural landscapes. The routes often feature packed and loose gravel, rugged doubletrack, and bare dirt.
Yes, some routes pass by or near places where you can refuel. The Gold Hill General Store – Switzerland Trail loop from Gold Hill Station, for instance, starts near the Gold Hill General Store, which is a great spot for a break. You might also find the Ward General Store accessible from some routes in the wider area.
Beyond the trails themselves, the St. Ann Highlands area offers several points of interest. You can visit the Gold Hill General Store for a historic stop or explore natural features like Gross Reservoir or Mud Lake. The region also features scenic canyons such as Fourmile Canyon and Sunshine Canyon.
The komoot community highly rates the gravel biking experience in St. Ann Highlands, with an average score of 5.0 stars. Reviewers often praise the challenging yet rewarding terrain, the stunning mountain views, and the sense of adventure found on these diverse trails.


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