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Routes
MTB trails
United States
California
San Mateo County

San Carlos

The best MTB trails around San Carlos

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.

Best mountain bike trails around San Carlos

  • The most popular mountain bike trail is Waterdog…

Last updated: April 25, 2026

4.9

(18)

116

riders

#1.

Waterdog Lake Park Loop

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

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Easy

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy
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Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate
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Popular around San Carlos

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Tips from the Community

Lisa
June 28, 2025, Hidden Canyon Park

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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Jamie S.
January 22, 2025, Water Dog Lake

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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Lisa
September 28, 2024, Water Dog Lake

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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Lisa
November 15, 2023, Water Dog Lake

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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Diana
April 10, 2022, Chaparral Trail

Chaparral Trail is an easy trail that can be ridden in both directions. A great trail for a ride with the whole family.

1

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Frequently Asked Questions

How many mountain bike trails are available around San Carlos?

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.

Are there easy mountain bike trails suitable for beginners in San Carlos?

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 – Top of John Brooks Trail loop from Belmont, which is just over 6 miles (9.8 km) and also rated easy.

What are the best mountain bike trails for experienced riders in San Carlos?

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.

Are there any mountain bike trails that are loop routes in San Carlos?

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.

What kind of scenery can I expect on mountain bike trails around San Carlos?

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.

Are there any family-friendly mountain biking options in San Carlos?

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.

What is the best season for mountain biking in San Carlos?

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.

What are some notable landmarks or attractions near the mountain bike trails?

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.

Are there any trails that offer views of lakes or water features?

Yes, many trails in San Carlos offer views of lakes and water features. The routes around Waterdog Lake, such as the Water Dog Lake – 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.

What do other mountain bikers enjoy most about the trails in San Carlos?

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.

Are there any longer mountain bike routes for endurance rides?

For those seeking longer rides, San Carlos offers routes that extend beyond 10 miles. The Water Dog Lake – 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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