4.6
(67)
2,137
riders
94
rides
Gravel biking around Pine Brook Hill Colorado offers diverse terrain in the foothills west of Boulder. The region is characterized by picturesque ponderosa pine forests, dramatic granite outcroppings, and winding canyons. This area provides a blend of gravel roads, paved sections, bike paths, and single and double-track trails, with expansive views stretching to the Continental Divide.
Last updated: July 12, 2026
5.0
(4)
139
riders
27.4km
01:53
620m
620m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(3)
52
riders
54.2km
04:03
1,190m
1,190m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.0
(1)
31
riders
34.0km
02:39
400m
400m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
2.7
(3)
56
riders
38.5km
03:00
1,030m
1,030m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.0
(1)
26
riders
24.2km
01:39
200m
200m
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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historic vacation community with several commons buildings and interesting architecture in a park athmosphere, an interesting climb through an old neighborhood leads there
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If you're looking for an excuse to pull over for a minute — or just a nice patch of nature on your ride — Maxwell Lake Park fills the bill. It has a small lake and an unpaved walking path (so you'll need to put your bike away when you walk around it).
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This little reservoir is a nice waypoint on your travels to or from the neighborhoods of Washington Village and Pine Hill, or nearby Maxwell Park. There's a paved trail that makes cycling here easy.
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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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You can easily walk along the river from the city towards Red Rocks.
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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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There are over 80 gravel bike routes available around Pine Brook Hill on komoot, catering to various skill levels and preferences. This includes 12 easy, 48 moderate, and 29 difficult trails.
The terrain around Pine Brook Hill is diverse, featuring a blend of gravel roads, paved sections, bike paths, and single and double-track trails. You'll encounter picturesque ponderosa pine forests, dramatic granite outcroppings, and winding canyons. Routes like the Wonderland Lake – Lefthand Trail loop offer varied landscapes, while the Boulder Creek Trail – Historic 'Wall Street' loop leads through canyons and open spaces with significant elevation.
Yes, there are several easier options. While the guide highlights moderate and difficult routes, the region offers trails suitable for beginners. For example, the Coot Lake Dock – Boulder Reservoir loop is a moderate 23.6 km ride with less elevation gain, making it a good choice for those looking for a less strenuous experience. The overall network includes 12 easy routes.
The Pine Brook Hill area offers expansive views stretching to the Continental Divide. Along the trails, you might encounter natural features like granite outcroppings and ponderosa pine forests. Specific highlights in the broader area include Green Mountain Peak, Bear Peak, and Mount Sanitas, which offer stunning vistas. The Anemone Point Viewpoint is also a great spot for scenic views.
The region generally offers good conditions for gravel biking across multiple seasons. However, given its location in the foothills west of Boulder, spring and fall often provide the most pleasant temperatures and vibrant scenery. Summer can be warm, while winter might bring snow, especially at higher elevations, impacting trail conditions. Always check local weather and trail reports before heading out.
Yes, many of the popular gravel bike routes in the area are loops. Examples include the Wonderland Lake – Lefthand Trail loop and the Boulder Valley Ranch Pond – Lefthand Trail loop. These circular routes allow you to start and end at the same point, making logistics easier.
The gravel bike trails around Pine Brook Hill are highly rated by the komoot community, with an average score of 4.4 stars from over 40 reviews. Users frequently praise the diverse terrain, the stunning views of the Continental Divide, and the blend of challenging climbs and scenic rides through ponderosa pine forests and granite outcroppings. The variety of routes, from easy to difficult, is also a common highlight.
Absolutely. For experienced riders seeking a challenge, routes like the Boulder Creek Trail – Historic 'Wall Street' loop offer a significant elevation gain of almost 900 meters over 45.9 km. Another difficult option is the Pine Brook Road (Gravel) – Maxwell Reservoir loop, which covers 25.5 km with 560 meters of elevation gain, providing a demanding ride through mountainous terrain.
The Pine Brook Hill area is rich in wildlife. While riding, you might spot deer, fox, and various bird species. Elk herds also pass through seasonally. It's a wild and preserved area, so there's also a possibility of encountering mountain lions and black bears, emphasizing the importance of staying aware of your surroundings and respecting wildlife.
While specific parking locations for every trailhead are not detailed here, the Boulder area generally offers various parking options near popular trail access points. For routes starting from Boulder, such as the Boulder Valley Ranch Pond – Lefthand Trail loop from Hotel Boulderado, you would typically look for public parking in Boulder itself or designated trailhead parking areas. Always check local signage for parking regulations and availability.
Pine Brook Hill is nestled in the foothills west of Boulder, which is a vibrant city with numerous cafes, pubs, and restaurants. While the trails themselves might be more remote, you'll find plenty of dining options in Boulder before or after your ride. Many routes, like those starting from Hotel Boulderado, are conveniently located near the city's amenities.


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