4.6
(47)
818
riders
27
rides
Gravel biking in San Mateo County offers diverse terrain, transitioning from Pacific coastline to redwood forests, rolling hills, and baylands. The region is characterized by dramatic cliffs, sandy beaches, and dense forests within the Santa Cruz Mountains. Features like Crystal Springs Reservoir and San Andreas Lake provide scenic backdrops, while areas like Wunderlich County Park offer challenging elevations. This varied landscape provides numerous routes suitable for gravel cyclists.
Last updated: April 30, 2026
3.0
(1)
16
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.0
(1)
14
riders
38.8km
02:55
700m
700m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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14
riders
47.7km
03:28
930m
930m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(1)
8
riders
43.4km
03:32
1,020m
1,020m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
5
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
8
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(1)
8
riders
33.2km
01:55
150m
150m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
2
riders
57.2km
04:55
1,300m
1,300m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
9
riders
48.1km
03:34
1,170m
1,170m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
riders
48.2km
03:59
1,300m
1,300m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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This isn't the sort of road you'd take a vehicle on, nowadays - but it's great for nontechnical mountain biking, and this high point gives you nice views over the surrounding hills.
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Miramar Beach offers a serene coastal escape with sandy shores and scenic vistas. Visitors can enjoy leisurely walks along the shoreline or explore the nearby California Coastal Trail, which provides stunning ocean views and connects to other local attractions.
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Devils slide itself is nice and just to the south is the beautiful Gray Whales Cove beach. There is plenty of parking at both places. Two notes for cyclist: 1. cycling along Hwy 1, coming from Pacifica, requires climbing on a relatively narrow but highly frequented road. It is not a long climb until the turnoff to Devils slide, but it might be stressful for cyclists who are not used to riding in heavy traffic. Hwy 1 south of Devils slide has enough space for everyone. 2. If you cycle on Hwy1, then check the wind forecast beforehand. Dominant wind direction is NW, which means cycling southbound maximizes tailwind and minimizes breathing in all the air pollution from stinky cars.
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Borel Hill is my favorite place to watch spring flowers. The western slope near ancient oaks (5-10min west of Borel Hill) are covered with orange California Poppies and purple flowers starting in April. Borel Hill itself peaks around mid May and has a wide variety of flowers. The show lasts only a few weeks until end of May. The peak time and flower intensity varies from year to year, so come several times between April and May. There is small summit NW of Borel Hill and a narrow dirt trail leads you to a rock within 2 min. The rock is big enough for 2-3 to sit on. On a sunny day, the rock is nice warm even if the air is cold. Good views on the ocean and the Bay.
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Didnβt OLR used to turn into Dirt before reaching Skyline? Is it all pavement now?? Scott
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Here, the Steve's Creek Nature Trail and the Canyon Trail intersect. A lovely patch of grass surrounds the junction, making it an ideal spot for a break.
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Black Mountain, situated on Monte Bello Ridge, is a popular destination for hikers and mountain bikers. With an elevation of 2,812 feet, it's easy to understand why. From the summit, the views of the Santa Cruz Mountains and Silicon Valley are breathtaking.
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Based on komoot data, there are over 35 gravel bike routes in San Mateo County, catering to various skill levels and offering diverse terrain from coastal paths to redwood forests.
Yes, San Mateo County offers several routes suitable for beginners. The region has 3 easy routes and 8 moderate routes, providing a good starting point for those new to gravel biking. These routes often feature less challenging terrain and elevation changes.
San Mateo County's gravel trails offer incredibly diverse scenery, transitioning from dramatic Pacific coastline and sandy beaches to lush redwood forests, rolling hills, and serene baylands. You can expect stunning ocean views, shaded forest paths, and picturesque reservoir vistas.
Absolutely. For experienced riders seeking a challenge, San Mateo County has 25 difficult routes. An example is the White Oak Trail β Bella Vista Trail loop from Los Trancos Open Space Preserve, which offers significant elevation changes and technical sections.
Many trails offer views of prominent natural features. You might encounter the scenic Lower Crystal Springs Reservoir or San Andreas Lake. Coastal routes often pass by dramatic cliffs and beaches, while inland trails wind through redwood groves in parks like Wunderlich County Park.
Yes, many routes in San Mateo County provide spectacular viewpoints. Areas like Mori Point, Milagra Ridge, and Rancho Corral de Tierra offer windswept ridgelines with expansive views of the Pacific Ocean and the San Francisco Bay. Montara Mountain, within Rancho Corral de Tierra, is known for its breathtaking 360-degree vistas.
Yes, San Mateo County offers options for longer gravel bike rides. For instance, the San Andreas Lake β Kings Mountain Road loop from Redwood City is a challenging 104.5 km (65 miles) route, perfect for those looking for an extended adventure.
The area is highly rated by the komoot community, with an average score of 4.3 stars from over 20 reviews. Reviewers often praise the diverse terrain, the stunning coastal and forest views, and the variety of routes available for different skill levels.
Many of the gravel routes in San Mateo County are designed as loops, allowing you to start and end at the same point. An example is the Skeggs Point β Blue Blossom Trail loop from Skeggs Point, which offers a rewarding circular ride through varied terrain.
San Mateo County's diverse habitats, including wetlands, grasslands, oak woodlands, and chaparral, support varied wildlife. While specific sightings are never guaranteed, you might spot various bird species, deer, and other small mammals, especially in quieter, less crowded areas.
Yes, you can find routes that explore the beautiful coastal areas. The Pillar Point Bluffs β Pillar Point Harbor & Pier loop from El Granada is a great option, leading you through scenic coastal bluffs and past the bustling harbor.
Many popular trailheads and parks in San Mateo County offer designated parking areas. Specific access points vary by route, but towns like Pacifica, Half Moon Bay, and Redwood City serve as common starting points with amenities and parking options nearby.


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