Thornewood Open Space Preserve (Closed Area)
Thornewood Open Space Preserve (Closed Area)
4.8
(15)
903
riders
46
rides
Touring cycling in Thornewood Open Space Preserve (Closed Area) offers routes on surrounding roads, as cycling is not permitted on the preserve's internal trails. The region features forested hills and diverse woodlands, with routes winding through second-growth redwood, Douglas fir, oak, and madrone. These routes are known for challenging elevation gains and provide glimpses of the southern San Francisco Bay and the Diablo Range from higher points.
Last updated: April 27, 2026
4
riders
18.8km
01:20
350m
350m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
46
riders
32.2km
02:16
630m
630m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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23
riders
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
25
riders
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
28
riders
26.1km
01:53
540m
540m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Thornewood Open Space Preserve (Closed Area)
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Road Cycling Routes in Thornewood Open Space Preserve (Closed Area)
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Gravel biking in Thornewood Open Space Preserve (Closed Area)
This is where La Ronda Road meets Skyline Boulevard. After the climb, itβs the perfect place to recharge and grab something to eat at one of the nearby restaurants or grocery stores. Alise's Restaurant is a popular one.
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The Northern part of Alpine Road is a paved and curvy descent through wooded areas and runs parallel to Coal Mine Ridge Preserve, eventually connecting with the trailhead there.
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Didnβt OLR used to turn into Dirt before reaching Skyline? Is it all pavement now?? Scott
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Wunderlich Park, spanning 942 acres, is picturesque, with a beautiful mix of chaparral and redwood forest, expansive meadows, and striking oak and madrone trees. There is plenty of open space featuring a network of lovely hiking trails. Donated to the county by Martin Wunderlich, this area includes what was once the Folger family ranch. The stable and surrounding buildings have been meticulously restored, serving as a cherished historic landmark for the community. Dogs are not allowed in the park, so you'll need to leave your pup at home.
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Great place for a break in a beautiful, peaceful spot among the redwoods. The restaurant is popular with locals, motorcyclists, hikers, and cyclists, and is the perfect place for a cold drink after finishing the climb up.
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Old La Honda Rd downhill video: https://youtu.be/icnBpBZQ8gE?si=xYovaH-Nr8llwLEM
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No, touring cycling is explicitly not permitted on the trails within Thornewood Open Space Preserve itself. However, the surrounding road network offers excellent opportunities for scenic and challenging road cycling.
There are over 35 touring cycling routes available in the region surrounding Thornewood Open Space Preserve (Closed Area). These routes vary in difficulty and offer diverse landscapes.
While many routes in the area feature significant elevation gains, there are a few easier options. The region offers 2 easy routes, 16 moderate routes, and 20 difficult routes, ensuring options for various fitness levels.
The cycling routes wind through forested hills and diverse woodlands, featuring second-growth redwood, Douglas fir, oak, and madrone. From higher points, you can catch glimpses of the southern San Francisco Bay, Palo Alto, and the Diablo Range. You might also encounter tranquil views of Schilling Lake from certain nearby cycling routes.
The routes in this area are generally known for their challenging elevation gains. While there are 2 easy routes, families with younger children or those seeking very flat terrain might find the options limited. It's best to check individual route profiles for elevation and distance to determine suitability for your family.
The area is highly rated by the komoot community, with an average score of 4.7 stars from over 19 reviews. Cyclists often praise the challenging elevation gains, the beautiful forested landscapes, and the panoramic views from higher points.
Yes, many of the routes in the area are circular. For example, the Old La Honda Road β Old La Honda Road loop from Jasper Ridge Biological Preserve is a popular 11.2-mile loop with significant elevation gain. Another option is the Portola Road β Woodside Store (Historic Site) loop from Enid Pearson-Arastradero Preserve, which is 17.0 miles long and passes historical points.
Yes, Old La Honda Road is a notable feature for cyclists in the wider Thornewood area, often included in popular road biking routes. It provides a challenging ascent through the natural landscape, as seen in routes like the Old La Honda Road β Portola Valley loop from Enid Pearson-Arastradero Preserve.
The region experiences wildflowers blooming in spring and fall foliage from black oaks and big-leaf maples later in the year, offering beautiful scenery. Weather conditions can vary, so checking the forecast before your ride is always recommended.
Yes, the area holds historical interest, as it was once part of the Julian and Edna Thorne estate. Routes like the Portola Road β Woodside Store (Historic Site) loop from Enid Pearson-Arastradero Preserve can lead you past such historical points, offering a glimpse into the region's past.
Many routes start from preserves or public access points that offer parking. For example, routes like the Old La Honda Road β Old La Honda Road loop start from Jasper Ridge Biological Preserve, and others like the Old La Honda Road β Portola Valley loop begin from Enid Pearson-Arastradero Preserve, which typically have parking facilities. Always check specific starting points for parking availability.
Generally, no specific permits are required for cycling on public roads surrounding Thornewood Open Space Preserve. However, it's always good practice to be aware of local regulations and any specific rules for parking areas or starting points within other preserves.


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