4.6
(123)
1,323
riders
52
rides
Mountain biking in Pulgas Ridge Open Space Preserve offers diverse landscapes across its 366 acres, featuring cool canyons, oak woodlands, chaparral, and ridge tops. The preserve's trails provide varied terrain with elevation changes of around 500 feet. Higher elevation routes offer expansive views of the San Francisco Bay and the surrounding Santa Cruz Mountains. The area is characterized by lush mixed evergreen forests and oak-covered hillsides, providing a natural setting for mountain bike trails.
Last updated: May 11, 2026
4.8
(17)
107
riders
10.8km
01:09
290m
290m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
5.0
(1)
58
riders
21.4km
02:03
560m
560m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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4.9
(21)
110
riders
11.8km
01:17
370m
370m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
5.0
(1)
10
riders
6.69km
00:42
180m
180m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
14
riders
5.22km
00:35
160m
160m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
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A nice pocket of multi-use, natural-surface trails. Dogs are allowed, but must be kept on leash.
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Such peaceful views at this spot on the trail after a long hike!
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At the top of the John Brooks Trail, you're treated to peaceful views of the surrounding San Francisco Peninsula Watershed.
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Water Dog Lake, also known as the John Brooks Memorial Open Space, is located in Belmont, California. The park features a network of trails open for hiking and mountain biking, but dogs must be kept on leash at all times.
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This lake is actually an obstructed stream, once dammed up to provide water to nearby Belmont. Now it's a fantastic recreation site, with several loops of trails that are good for hiking, running and biking.
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Watch out for poison oak when hiking around Water Dog Lake! As long as you avoid the three-leaved menace, you'll find some nice dirt trails, and welcome shade from oak trees, around this lake.
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Chaparral Trail is an easy trail that can be ridden in both directions. A great trail for a ride with the whole family.
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I highly recommend riding Rambler Trail. It is one of the best mountain bike trails in Waterdog. Rambler Trail has also a very cool feature that leads you to the roof of an old abandoned car.
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Komoot features over 45 mountain bike routes in and around Pulgas Ridge Open Space Preserve. These routes offer a variety of experiences, from easy loops to more challenging rides.
Yes, there are several easy mountain bike trails. For instance, the Chaparral Trail โ Hidden Canyon Park loop from Belmont is an easy 3.2-mile route. Another great option is the Water Dog Lake โ Top of John Brooks Trail loop from Belmont, which is 6.7 miles long and also rated as easy.
The trails in and around Pulgas Ridge Open Space Preserve feature diverse terrain, including cool canyons, oak woodlands, chaparral, and ridge tops. You can expect elevation changes of around 500 feet within the preserve, with some routes like the Water Dog Lake โ Chaparral Trail loop from Belmont accumulating over 1,800 feet of elevation gain over its 13.3 miles.
Yes, many routes in the area provide expansive views. Higher elevation trails often offer panoramic vistas of the San Francisco Bay, the southern peninsula, and the surrounding Santa Cruz Mountains. Trails leading through ridge sections, such as parts of the Chaparral Trail โ Top of John Brooks Trail loop from San Carlos, are known for their scenic outlooks.
Pulgas Ridge Open Space Preserve is well-known for being dog-friendly. While dogs are generally allowed on leash on all trails within the preserve, and there's a significant 17-acre off-leash area, it's important to check specific trail regulations for mountain biking with dogs, especially on routes that may extend beyond the preserve's core trails.
Yes, many of the mountain bike routes in the area are designed as loops, allowing you to start and finish at the same point. Examples include the Water Dog Lake โ Top of John Brooks Trail loop from Belmont and the Waterdog Lake Park Loop, both offering convenient circular rides.
The preserve is home to diverse natural features, including lush mixed evergreen forests, oak woodlands, and chaparral. In early spring, you can see numerous wildflowers like Indian warrior and giant trillium. While mountain biking, you might spot local wildlife such as deer, various bird species, and possibly the dusky-footed woodrat, which has a trail named after it.
The routes in and around Pulgas Ridge Open Space Preserve are highly rated by the komoot community, with an average score of 4.8 stars from over 100 reviews. Reviewers often praise the diverse landscapes, the variety of terrain, and the opportunity to experience both challenging climbs and enjoyable descents through oak woodlands and chaparral.
While the original buildings were demolished, the land that is now Pulgas Ridge Open Space Preserve was formerly the site of the Hassler Health Farm, a tuberculosis sanitarium. You can still find some old retaining walls and steps off the Hassler Trail, hinting at its past. The Cordilleras Trail also passes near the source of Cordilleras Creek, an important natural feature.
The preserve offers enjoyable riding conditions throughout much of the year. Spring is particularly beautiful with abundant wildflower displays. Fall brings pleasant temperatures and changing foliage. While specific weather conditions can vary, the mild climate of the Santa Cruz Mountains generally allows for mountain biking in most seasons, though checking local weather forecasts is always recommended.
Pulgas Ridge Open Space Preserve has designated parking areas. For specific trailheads, it's best to check the starting points of individual routes on komoot, as many tours will indicate nearby parking options. For example, routes starting from Belmont or San Carlos often have accessible parking.
The preserve is located above San Carlos and Redwood City, which offer various amenities. After your ride, you can find cafes, restaurants, and other services in these nearby towns, typically just a short drive from the preserve's access points.


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