Lakes around San Bruno offer natural escapes within San Mateo County, California. The region is characterized by its proximity to the San Andreas Fault and its role in the area's water supply. These lakes provide opportunities for outdoor activities like hiking and cycling along scenic trails. The landscape features views of water and surrounding hills, with some locations holding historical significance.
Last updated: April 26, 2026
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San Andreas Lake is a hidden gem tucked into the hills of San Mateo County, just south of San Francisco. Originally a natural sag pond formed by the San Andreas Fault, it was transformed into a reservoir in the late 1800s and now serves as a vital water source for the region. The lake is off-limits for swimming or boating, but you can enjoy its peaceful beauty from the San Andreas Trail or the popular Sawyer Camp Trail, which runs along its eastern edge. It's a serene spot where you can walk or bike with sweeping views of the water and surrounding hills, all while standing right on one of the worldβs most famous fault lines. Despite its proximity to urban life, San Andreas Lake offers a quiet, scenic escape steeped in natural and historical significance.
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The Crystal Springs Regional Trail is a top spot for cyclists, featuring mostly paved paths with minimal car traffic. The trail runs through scenic areas like Lower Crystal Springs Reservoir, offering beautiful lake views. On Sundays, you can ride the car-free CaΓ±ada Road segment for a more relaxed experience. Be mindful of the 15 mph speed limit, especially around hikers. The Sawyer Camp segment provides a gentle descent and stunning views, perfect for an easy ride through woodlands and along the reservoir.
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Gray Whale Cove State Beach is a beautiful, secluded beach located nine miles north of Highway 92 along Highway 1. This 800-foot stretch of white sand is nestled in a small valley known as "Devil's Slide" and is shielded from the highway by cliffs. The beach is named for the gray whales often spotted here during their spring migration. Facilities include free day parking, chemical toilets, but no water, so keep this in mind as you ride.
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This is of the most beautiful beaches in Northern California. The views are stunning, making it an excellent place to have lunch on the beach and take memorable photos.
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Great amount of wild flowers and amazing visas of the ocean. Spotted a whale.
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very nice beach. invites you to linger.
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The lakes around San Bruno offer excellent opportunities for hiking and cycling. You can explore trails like the Crystal Springs Regional Trail, which is mostly paved and suitable for bikes, or the scenic Sawyer Camp Trail along San Andreas Lake. For more intense activities, there are also various running, mountain biking, and gravel biking routes nearby. For example, you can find running trails like the "Sawyer Camp Recreation Trail loop from Millbrae" or mountain biking routes such as "Devil's Slide β Ace Trail loop from Pacifica" in the area. You can find more details on these routes in the Running Trails around San Bruno, MTB Trails around San Bruno, and Gravel biking around San Bruno guides.
Yes, several lakes and trails are suitable for families. Both Lower Crystal Springs Reservoir and San Andreas Lake are considered family-friendly, offering accessible trails for walking and cycling. The Crystal Springs Regional Trail, which runs along these reservoirs, features mostly paved paths with beautiful lake views, making it ideal for a family outing. Brisbane Lagoon also offers a family-friendly viewpoint.
No, direct water access for activities like swimming and boating is restricted in both San Andreas Lake and Lower Crystal Springs Reservoir. These lakes serve as crucial public water sources for the region, and public access to the water is prohibited to maintain water quality. However, you can enjoy their beauty from the surrounding trails.
The Sawyer Camp Trail is a popular, scenic 6-mile paved path that runs along the eastern edge of San Andreas Lake and connects to the Lower Crystal Springs Reservoir. It's part of the larger Crystal Springs Regional Trail system. The trail offers beautiful views of the water and surrounding hills, making it a favorite for hikers and cyclists. It descends about 400 feet over its length, passing through riparian woodlands.
Information regarding dog policies can vary by specific trail segments and park regulations. While some areas might be dog-friendly, it's always best to check the specific rules for trails like the Sawyer Camp Trail or the Crystal Springs Regional Trail before bringing your dog. Generally, dogs are often required to be on a leash in public park areas.
San Andreas Lake, in particular, has significant historical importance. Originally a natural sag pond formed by the San Andreas Fault, it was expanded into a reservoir in 1868 and became a vital water source for early settlers. Its location directly on the San Andreas Fault also gives it geological significance. You can learn more about its history here.
The lakes offer picturesque views of water and surrounding hills, often with wildflowers in season. San Andreas Lake is notable for its direct location on the San Andreas Fault, providing a unique geological perspective. The area around Lower Crystal Springs Reservoir features riparian woodlands. You might also spot various wildlife, especially birds, in these natural settings.
Yes, parking is generally available at various access points along the trails, such as those for the San Andreas Lake and Crystal Springs Regional Trail. For example, the Sawyer Camp Trail has access points with parking. It's advisable to check specific trailheads for detailed parking information, especially during peak times.
The lakes around San Bruno can be enjoyed year-round, but spring and fall often offer the most pleasant weather for outdoor activities like hiking and cycling. Spring brings wildflowers, while fall provides cooler temperatures. Weekends, particularly Sundays, can be special on the Crystal Springs Regional Trail, as the CaΓ±ada Road segment is closed to cars for "Bicycle Sundays," offering a more relaxed experience.
While the primary focus is on inland lakes, the region is close to the coast. Gray Whale Cove State Beach is a beautiful, secluded beach located a short drive away, offering stunning ocean views and opportunities to spot gray whales during their migration. It's a great option if you're looking to combine a lake visit with a coastal experience.
Visitors frequently praise the peaceful beauty and scenic views offered by the lakes. The paved trails, like the Crystal Springs Regional Trail and Sawyer Camp Trail, are highly appreciated for cycling and walking, providing a quiet escape with sweeping views of the water and surrounding hills. The historical and geological significance of San Andreas Lake also adds to the appeal.
Brisbane Lagoon is unique as it is a remnant of San Francisco Bay, formed by the construction of the U.S. Highway 101 causeway. It's located on the lower slopes of San Bruno Mountain and offers a viewpoint rather than extensive trails directly around it like the larger reservoirs. It provides a different kind of natural experience, closer to the bay's ecosystem.


Still not found your perfect lake around San Bruno? Check out the guides of these regions to see even more beautiful places.