4.7
(96)
785
riders
31
rides
Mountain biking around Foster City provides access to varied landscapes, from flat, paved multi-use paths along the San Francisco Bay to more rugged, hilly terrain in nearby parks. The city itself features a distinctive lagoon system and extensive waterfront, offering leisurely rides with scenic views. Just a short drive away, areas like Water Dog Lake Park present more challenging mountain bike trails with elevation changes and natural features.
Last updated: May 11, 2026
4.9
(18)
117
riders
12.4km
01:17
330m
330m
Moderate mountain bike ride. Good fitness required. 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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There are over 20 mountain bike trails around Foster City documented on komoot, offering a variety of experiences for different skill levels. The komoot community has explored these routes over 500 times.
The trails around Foster City cater to a range of abilities. You'll find 9 easy routes, 12 moderate routes, and 1 difficult route, ensuring options for both beginners and experienced riders.
Yes, there are several easy routes perfect for beginners. A great option is the Waterdog Lake Park Loop, which is 7.8 miles long and explores varied terrain. Another easy choice is the Salson, Slip, Headbangers Ball, and Amphitheater Loop, offering a dynamic ride through the park's trails.
Mountain biking around Foster City offers diverse terrain. You'll find flat, paved multi-use paths along the San Francisco Bay and the Foster City Lagoon for leisurely rides. Just a short drive away, areas like Water Dog Lake Park provide more rugged, hilly terrain with elevation changes, woodlands, and natural features.
Absolutely! Many trails offer picturesque views of the San Francisco Bay, marshlands, and the Foster City Lagoon. The Water Dog Lake โ Top of John Brooks Trail loop from Belmont leads through woodlands and provides scenic vistas. You can also find natural attractions like the Lower Crystal Springs Reservoir and the Salt Pond Pier nearby.
The area is highly rated by the komoot community, with an average score of 4.9 stars from over 50 reviews. Mountain bikers often praise the varied terrain, from flat bayfront paths to challenging park trails, and the accessibility to beautiful natural landscapes like Water Dog Lake Park.
Yes, many of the mountain bike trails around Foster City are loops, which are great for exploring without retracing your steps. Popular loop options include the Waterdog Lake Park Loop and the Salson, Slip, Headbangers Ball, and Amphitheater Loop.
Foster City's mild coastal climate makes it conducive to year-round outdoor activities. You can enjoy mountain biking throughout the year, though checking local weather conditions is always recommended.
While many trails are easy to moderate, there is at least one difficult route available for experienced riders. The nearby Water Dog Lake Park also offers portions that require good fitness and advanced skills. For more challenging rides, consider exploring trails in the broader Midpeninsula Regional Open Space District or San Mateo County Parks, which are easily accessible from Foster City.
Yes, the flat, paved paths along the Foster City Lagoon and the San Francisco Bay Trail are excellent for family-friendly rides. Many of the easy-rated mountain bike routes, such as the Waterdog Lake Park Loop, can also be suitable for families looking for a bit more adventure.
Parking is generally available at trailheads for popular areas like Water Dog Lake Park. For trails along the Foster City Lagoon and Bay Trail, you can often find parking in designated areas within Foster City's parks, such as Leo J. Ryan Memorial Park.
Dog policies vary by park and trail. While some multi-use paths may allow leashed dogs, it's always best to check the specific regulations for each park or trail you plan to visit, especially for more rugged mountain biking areas like Water Dog Lake Park.


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