The best road cycling routes in San Pedro Mountain Open Space Preserve
4.5
(163)
5,939
riders
89
rides
Road cycling in San Pedro Mountain Open Space Preserve offers a diverse landscape for cyclists. The region is characterized by rolling hills, open spaces, and scenic views, providing varied terrain for road biking. Routes often feature a mix of climbs and descents, with some leading through more exposed areas and others offering views of reservoirs and natural parks. The preserve's network of road cycling routes includes options for easy, moderate, and difficult rides.
Best road cycling routes in San Pedro Mountain Open Space Preserve
- The most popular road cycling route is Nicasio Reservoir loop from Marin Civic Center, a 49.8 miles (80.2 km) trail that takes 3 hours 49 minutes to complete. This difficult route features significant elevation gain and scenic reservoir views.
- Another top favourite among local road cyclists is Nicasio – Stafford Lake Park loop from Marin Civic Center, a moderate 37.8 miles (60.8 km) path. This route offers a mix of open road and views of Stafford Lake Park.
- Local road cyclists also love the Nicasio – Nicasio Reservoir loop from Marin Civic Center, a 30.0 miles (48.4 km) trail leading through the Nicasio area, often completed in about 2 hours 7 minutes.
- Road cycling in San Pedro Mountain Open Space Preserve is defined by rolling hills, open spaces, and reservoir views. The network offers options for various ability levels, from moderate loops to more challenging climbs.
- The routes in San Pedro Mountain Open Space Preserve are highly rated by the komoot community with an average score of 4.5 stars from over 120 reviews. More than 6,000 road cyclists have used komoot to explore San Pedro Mountain Open Space Preserve's varied terrain.
Last updated: July 8, 2026
30
riders
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
5.0
(7)
405
riders
80.2km
03:50
980m
980m
Embark on the Nicasio Reservoir loop from Marin Civic Center, a challenging racebike route that spans 49.8 miles (80.2 km). You will conquer a significant elevation gain of 3214 feet (980 metres) over an estimated 3 hours and 49 minutes, making this a difficult ride. As you cycle, you will experience diverse scenery, from rolling hills and sprawling farms to open countryside dotted with oak trees. The route offers picturesque lake views, especially along Nicasio Valley Road, where you can admire the Nicasio Reservoir. Keep an eye out for landmarks like the Leo Cronin Fish Viewing Area, adding a unique touch to your journey.
To begin your adventure, head to the Marin Civic Center, which serves as the starting point for this loop and usually provides convenient parking. The roads you will traverse are primarily paved, ensuring a smooth racebike experience. Expect generally light traffic once you are away from major arteries, contributing to a tranquil cycling environment. There are no specific permits or fees mentioned for accessing this public road route, so you can focus on the ride itself.
This area truly comes alive in springtime, when the landscape transforms with vibrant colors, offering an especially beautiful backdrop for your ride. The route's design through Marin County showcases a classic Northern California cycling experience, blending rural charm with scenic water views. It stands out as a robust workout for experienced cyclists, providing both a physical test and a rewarding visual journey through the region's natural beauty. Consider this loop if you are seeking a substantial road cycling challenge with varied vistas.
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5.0
(3)
162
riders
79.0km
03:58
880m
880m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
1.0
(1)
79
riders
65.5km
05:14
1,320m
1,320m
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.
56
riders
110km
05:40
1,830m
1,830m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
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Popular around San Pedro Mountain Open Space Preserve
Tips from the Community
Paved section riding on the ridge between Pan Toll Road and Fairfax-Bolinas Road where it contains as Bolinas Ridge Trail, with spectacular views along the way toward the Pacific Ocean and Stinson Beach far below. The road is open during daylight hours only, in winter that means 9am to sunset.
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Constructed in 1917 this dam forms Alpine Lake, which sites between Kent and Bon Tempe Lakes. The road across the top of the dam make it a great place to ride on a loop around the lake.
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This lake was formed by the building of Alpine Dam in 1917. It sits between Kent Lake and Bon Tempe Lake, and is popular for a variety of outdoor activities.
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The Pantoll Campground is a First-come/first-serve site in Mt. Tamalpais State Park. Each site has a barbeque grill, a fire ring, and a picnic table. You need to pay for the site at the Ranger Station as you enter the park.
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The park pays homage to a 19th-century fishing village of Chinese immigrants who harvested shrimp from the bay. Much of the village has been preserved, and for a couple bucks you can pay to enter and explore the old town and pier.
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From this spot on the Shoreline Highway in Mount Tamalpais State Park you get great views over the smooth road to Gull Rock. This is a lovely spot on a lovely stretch of road along the rugged coast.
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Frequently Asked Questions
How many road cycling routes are available in San Pedro Mountain Open Space Preserve?
There are over 80 road cycling routes in San Pedro Mountain Open Space Preserve, offering a wide range of options for different skill levels and preferences.
What is the overall difficulty level of road cycling in San Pedro Mountain Open Space Preserve?
The preserve offers a diverse range of difficulties. You'll find 29 easy routes, 35 moderate routes, and 22 challenging routes, ensuring there's something for every cyclist.
Are there beginner-friendly road cycling routes in San Pedro Mountain Open Space Preserve?
Yes, there are 29 easy road cycling routes suitable for beginners or those looking for a more relaxed ride. These routes typically feature less elevation gain and shorter distances.
Where can I find challenging road cycling routes in San Pedro Mountain Open Space Preserve?
For experienced cyclists seeking a challenge, there are 22 difficult routes. An example is the Nicasio Reservoir loop from Marin Civic Center, which covers 49.8 miles (80.2 km) with significant elevation gain.
What are some popular loop routes for road cycling in the preserve?
Many routes in the preserve are loops. Popular options include the Nicasio – Stafford Lake Park loop from Marin Civic Center, a moderate 37.8-mile (60.8 km) ride, and the Nicasio – Nicasio Reservoir loop from Marin Civic Center, a 30.0-mile (48.4 km) trail.
What is the best time of year for road biking in San Pedro Mountain Open Space Preserve?
The San Francisco Bay Area generally enjoys mild weather year-round. Spring and fall often offer the most pleasant temperatures for cycling, with less chance of extreme heat or heavy rain. However, many routes are enjoyable in winter and summer too, with appropriate gear.
Are there scenic viewpoints along the road cycling routes?
Yes, the preserve is known for its scenic beauty. Many routes offer views of rolling hills, open spaces, and reservoirs, such as the Nicasio Reservoir. The varied terrain provides numerous opportunities for picturesque vistas.
What kind of wildlife might I encounter while road biking?
San Pedro Mountain Open Space Preserve is home to various wildlife. While cycling, you might spot deer, various bird species, and smaller mammals. Always maintain a respectful distance and do not disturb the animals.
Where can I find parking for road biking in San Pedro Mountain Open Space Preserve?
Many routes, such as those starting from Marin Civic Center, offer convenient parking options. It's always recommended to check the specific route details on komoot for designated parking areas or trailheads before your ride.
What do other road cyclists enjoy the most about road cycling in San Pedro Mountain Open Space Preserve?
The area is highly rated by the komoot community, with an average score of 4.5 stars from over 120 reviews. Reviewers often praise the diverse landscape, the mix of climbs and descents, and the beautiful reservoir views.
Are there any routes that pass by Stafford Lake Park or Olompali State Historic Park?
Yes, the Stafford Lake Park – Olompali State Historic Park loop from Marin Civic Center is a moderate 53.1-mile (85.5 km) route that allows you to experience both of these notable locations.
How long do road cycling routes typically take in the preserve?
Route durations vary significantly based on distance and elevation. For example, the Nicasio Reservoir loop from Marin Civic Center typically takes around 3 hours 49 minutes, while shorter routes can be completed in under 2 hours.
Most popular routes in San Pedro Mountain Open Space Preserve
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