4.8
(100)
1,162
riders
49
rides
Mountain biking around San Carlos offers a network of trails winding through varied terrain, including hills and areas around Waterdog Lake. The landscape features a mix of open spaces and wooded sections, providing diverse riding experiences. Elevation gains are present on many routes, contributing to the challenge and scenic views. The region's geology supports a range of singletrack and wider paths suitable for mountain biking.
Last updated: April 25, 2026
4.9
(18)
116
riders
12.6km
01:18
300m
300m
This easy 7.8-mile mountain biking loop in Waterdog Lake Open Space offers diverse terrain, including twisty singletrack and unique features
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.

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4.9
(11)
86
riders
20.5km
01:50
500m
500m
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.
4.9
(21)
110
riders
11.8km
01:17
370m
370m
Moderate mountain bike ride. Good fitness required. 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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Once part of the Southern Pacific Railroad, this station is now served by local and limited-service Caltrain operations.
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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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There are over 40 mountain bike trails around San Carlos, offering a variety of experiences for different skill levels. The komoot community has explored these routes over 1400 times, providing an average rating of 4.8 stars.
Yes, San Carlos offers several easy mountain bike trails perfect for beginners. For example, the Waterdog Lake Park Loop is an easy 7.8-mile (12.6 km) trail that provides a balanced ride with moderate elevation changes around the lake. Another great option is the Rambler Trail β Top of John Brooks Trail loop from Belmont, which is just over 6 miles (9.8 km) and also rated easy.
While many trails offer moderate challenges, more experienced riders can find routes with significant elevation gains. The region features hilly terrain and a mix of singletrack and wider paths that provide a good workout. Approximately 7 of the 44 trails are rated as difficult, offering more technical sections and climbs.
Yes, many of the mountain bike trails in San Carlos are loop routes, which are great for exploring without retracing your steps. Popular loops include the Waterdog Lake Park Loop and the Top of John Brooks Trail loop from Belmont, which is a longer 12.7-mile (20.5 km) ride through hilly terrain.
Mountain bike trails around San Carlos offer diverse scenery, including winding paths through varied terrain, open spaces, and wooded sections. Many routes provide scenic views of Waterdog Lake and the surrounding hilly landscapes. You'll encounter a mix of natural beauty and well-maintained trails.
For families looking for a pleasant ride, the easier trails around Waterdog Lake are generally suitable. These routes offer relatively gentle terrain and scenic surroundings, making them enjoyable for riders of varying ages and skill levels. Always check the specific trail details for suitability before heading out.
The best season for mountain biking in San Carlos is typically during the drier months, from late spring through fall, when trails are less likely to be muddy. The region's Mediterranean climate generally offers pleasant riding conditions during these times. Always check local weather and trail conditions before your ride.
While mountain biking, you can explore several interesting landmarks and natural features. The trails often pass near Lower Crystal Springs Reservoir and the scenic Pulgas Water Temple. These spots offer beautiful views and opportunities for a short break.
Yes, many trails in San Carlos offer views of lakes and water features. The routes around Waterdog Lake, such as the Water Dog Lake β Top of John Brooks Trail loop from Belmont, provide picturesque lakeside riding. You can also find views of the Lower Crystal Springs Reservoir from certain points.
The mountain bike trails in San Carlos are highly rated by the komoot community, with an average score of 4.8 stars from over 100 reviews. Reviewers often praise the varied terrain, the mix of singletrack and wider paths, and the beautiful lake views, particularly around Waterdog Lake. The network offers options for different ability levels, from easy loops to more moderate climbs.
For those seeking longer rides, San Carlos offers routes that extend beyond 10 miles. The Water Dog Lake β Chaparral Trail loop from Belmont is a moderate 13.3-mile (21.3 km) trail with significant elevation gain, providing a good challenge for endurance.


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