4.3
(5)
138
riders
3
rides
Gravel biking in Bolinas Lagoon Open Space Preserve's surrounding areas offers diverse landscapes for cyclists. The region is characterized by varied terrain, including dirt double tracks, mixed gravel and paved sections, and significant elevation changes. Riders can expect to encounter redwood groves, open grassy hillsides, and coastal paths, providing a robust cycling experience. While the Bolinas Lagoon Open Space Preserve itself does not permit cycling, the broader area, including the Bolinas Ridge Trail and nearby parks, provides extensive no traffic…
Last updated: September 2, 2026
5.0
(1)
4
riders
69.3km
06:24
1,680m
1,680m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
80.4km
05:10
1,020m
1,020m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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3.0
(1)
34
riders
49.9km
04:29
1,340m
1,340m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(3)
74
riders
35.0km
03:01
930m
930m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Bolinas Lagoon Open Space Preserve
Opening this bike tunnel through the renovated trail tunnel as part of the 2010 redeveloped rail connection from Larkspur Ferry to Santa Rosa closed a crucial gap in the bike commute to San Francisco.
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Pantoll Road is a beautiful, mostly paved route through Mount Tamalpais State Park, connecting the Panoramic Highway to Ridgecrest Boulevard. It winds closely along the curves of the hillside, with some shade from the trees in some spots. There are fantastic views along the way of San Francisco and the Marin Headlands, with incredible viewpoints over the Pacific coastline.
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This large group picnic area is a lovely spot under a shady grove of towering redwoods that sits along Lagunitas Creek. There is piped drinking water and restrooms nearby, and if it is not in use, it is an excellent place to stop for lunch. If you are bike touring with friends and wish to spend time here, you can reserve this spot through the Samuel Taylor State Parks' department website.
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This tidal sanctuary runs along the Mill Valley-Sausalito Pathway and the Charles F. McGlashan Pathway. More than 400 species of migratory birds rest here after their long flights, and if you pass through in the early morning or late evening, the sunrises and sunsets reflect beautifully on the surface of this 106-acre marsh.
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From easiest to hardest climbs out of phoenix lake from this junction: -Shaver Grade, easy grade, longer, shaded and pretty -Eldridge Grade, medium, good length and can connect you to mt tam east peak -Fish Grade fire road, very steep, we hiked the bikes
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On Shaver Grade Road, you get to ride along the incredibly blue waters of Phoenix Lake.
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While the Bolinas Lagoon Open Space Preserve is a beautiful natural area, bicycle riding is generally not permitted within its immediate boundaries. However, the broader Bolinas Lagoon area, particularly the Bolinas Ridge Trail and surrounding lands, offers exceptional gravel biking opportunities with diverse landscapes and no traffic.
You'll find a mix of terrain, often described as 'dirt double track,' combining gravel and paved sections. Expect varied surfaces, from redwood groves to open, grassy hillsides. Some sections can be rugged and bumpy, providing a true gravel grinding experience.
Yes, the gravel routes in the broader Bolinas Lagoon area, such as those connecting to the Bolinas Ridge Trail, often feature significant elevation changes and challenging sections. For example, routes like the Pantoll Road – Alpine Lake loop from Mount Tamalpais State Park and the Cal Park Tunnel & Pathway – Fish Gulch trail junction loop from Mount Tamalpais Watershed are rated as difficult, offering robust cycling experiences.
The routes around Bolinas Ridge often provide sweeping panoramic views. You can expect stunning vistas of the Pacific Ocean, San Francisco Bay, and Mount Tamalpais, along with classic California coastlines and diverse natural scenery.
The gravel routes in the broader Bolinas Lagoon area, particularly those associated with the Bolinas Ridge Trail, are generally considered more rugged and challenging, often involving significant climbs and descents. They are typically rated as difficult, making them less suitable for beginners or young families looking for easy, flat rides.
While biking, you'll experience varied landscapes including redwood groves and open hillsides. The Bolinas Lagoon itself is a significant tidal estuary, known for abundant wildlife. It's a hotspot for birdwatching, with diverse waterfowl and shorebirds, and you might spot harbor seals lounging on sandbars, especially at low tide. The area also has geological significance, formed by the San Andreas Fault.
While the immediate preserve is for hiking and wildlife viewing, the broader area offers several points of interest. You might encounter sections of Shoreline Highway 1, or pass by areas like Martin Griffin Preserve. The charming seaside villages of Bolinas and Stinson Beach are also nearby, offering amenities.
The Bolinas Lagoon area generally offers good gravel biking conditions year-round, but spring and fall are often ideal with milder temperatures and less chance of extreme weather. Summer can be foggy, especially along the coast, while winter can bring rain, which might make some unpaved sections muddy or bumpy. Always check local weather and trail conditions before heading out.
Parking is typically available at trailheads or designated parking areas in the broader region surrounding Bolinas Lagoon, such as those near Mount Tamalpais State Park or Mount Tamalpais Watershed, which serve as starting points for many gravel routes. Always check specific route details for recommended parking locations.
Yes, there are loop options available that incorporate the Bolinas Ridge Trail and connect with other trails. For instance, the Fern Creek and spring loop from Mill Valley offers a challenging circular route through varied terrain.
Dog policies vary significantly across different trails and land management agencies in the broader Bolinas Lagoon area. While some trails may permit dogs on leash, others may have restrictions or prohibit them entirely. It's crucial to check the specific rules for each trail or park you plan to visit before bringing your dog.


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