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Road cycling routes
United States
California
San Mateo County

Thornewood Open Space Preserve

The best road cycling routes in Thornewood Open Space Preserve

By Fede from komoot

ยท

Updated May 29, 2026

If you've ever tried to plan road cycling in Thornewood Open Space Preserve, you know how quickly the options can feel overwhelming. It's tough to tell which routes are genuinely worth your time and effort, and which are just filler. We get it โ€“ finding those standout rides among countless possibilities can be a real pain.

That's where we come in. Our komoot community has mapped, ridden, and reviewed these roads, so this guide is your curated shortlist of the routes that truly deliver. We're here to save you the guesswork and point you straight to the best of what the Santa Cruz Mountains have to offer. While cycling isn't permitted within the preserve itself, the surrounding roads are a road cyclist's dream, defined by forested hillsides of redwood, Douglas fir, oak, and madrone, with significant elevation gains and panoramic views of the southern San Francisco Bay and the distant Diablo Range. You'll find everything from well-paved, easy spins to challenging climbs that will test your legs.

For a classic experience that local road cyclists love, we'd start with the Old La Honda Road โ€“ Old La Honda Road loop from Portola Valley. This moderate 9.4 miles (15.1 km) route offers a fantastic taste of the area's forested hills and rewarding climbs. If you're looking for something a bit easier, the Alpine Road loop from Portola Valley is a great choice at 8.9 miles (14.5 km), providing a scenic ride without quite as much vertical. With over 4,600 road cyclists having explored these routes with komoot, you know you're in good company.

If you only do 3 of these routes

  1. 1

    Old La Honda Road โ€“ Portola Road loop from Ladera
  2. 2

    Alpine Road loop from Portola Valley
  3. 3

    Lower Kings Mountain Road โ€“ Woodside Store (Historic Site) loop from Woodside

Compare these routes at a glance

Trail

Distance

Elevation

Difficulty

Old La Honda Road โ€“ Portola Road loop from Ladera

29.9ย km

710ย m

Moderate

Alpine Road loop from Portola Valley

14.5ย km

200ย m

Easy

Lower Kings Mountain Road โ€“ Woodside Store (Historic Site) loop from Woodside

13.4ย km

220ย m

Moderate

Old La Honda Road โ€“ Portola Road loop from Portola Valley

14.7ย km

260ย m

Easy

1.

Old La Honda Road โ€“ Portola Road loop from Ladera

29.9km

01:47

710m

710m

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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2.

Alpine Road loop from Portola Valley

14.5km

00:44

200m

200m

Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

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3.

Lower Kings Mountain Road โ€“ Woodside Store (Historic Site) loop from Woodside

13.4km

01:28

220m

220m

Moderate road ride. Great for any fitness level. Some segments of this route may be unpaved and difficult to ride.

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Tips from the Community

Lisa
June 22, 2025, Old Woodside Store Museum

Once upon a time this was the only general store in this area, serving not only as a general-purpose retailer but also the post office, bank, and informal dentist's office. Nowadays it's a museum, staffed by docents ready to offer drop-in history lessons.

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Will
June 20, 2025, Alpine Road

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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Didnโ€™t OLR used to turn into Dirt before reaching Skyline? Is it all pavement now?? Scott

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Woodside Store was built back in the 1850s by two pioneers who came to California for the gold rush. At the time it was the only stagecoach stop between San Francisco and Santa Clara, and it carried all the essential items that travelers riding between cities might need. The store has been restored, inside and out, to look exactly as it did centuries ago. You can call the museum ahead of your trip to book tours.

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Sue
January 10, 2025, Huddart County Park

This charming park is just 3.5 miles west of Highway 84. There are barbecue pits, a playground, spacious grassy meadows, and plenty of hiking and riding trails. It's an ideal destination for a picnic or a peaceful stroll through the enchanting redwood forest along the park's beautiful winding paths. Dogs are not allowed in the park, so you'll need to leave your pup at home.

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Old La Honda Rd downhill video: https://youtu.be/icnBpBZQ8gE?si=xYovaH-Nr8llwLEM

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The Woodside Store, also known as Tripp Store, is located at 3300 Tripp Road at Kings Mountain Road in Woodside, San Mateo County, California. It has been listed on the National Register of Historic Places since 1985 and was designated a California Historical Landmark in 1949. The store's history dates back to October 1849 when Matthias Alfred Parkhurst purchased land in the area and began a shingle-making and lumber business with his partners, including Robert Orville Tripp. The store was established in 1853, originally serving the needs of lumbermen and settlers during the Gold Rush era. Dr. Tripp became the sole operator of the store after Parkhurst's death in 1863, running it until his own death in 1909. He was a well-known figure in Woodside, holding various public offices. The San Mateo County Historical Association acquired the store in the 1940s, and it was restored to its 1880s condition by 1994.

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51m
December 7, 2023, Old La Honda Road

3 miles of great winding mountain road. It ascends from the Palo Alto side up to the Skyline road. Quite narrow in places and fairly steep, but only light car use means this is a fun road climb.

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Frequently Asked Questions

Can I road cycle directly within Thornewood Open Space Preserve?

No, road cycling is not permitted on the internal trails of Thornewood Open Space Preserve itself. However, the surrounding roads in the Santa Cruz Mountains offer excellent opportunities for road cycling, with routes often passing near or by the preserve.

What kind of terrain can I expect on road cycling routes near Thornewood Open Space Preserve?

The region features diverse terrain, from forested hills with a mix of redwood, Douglas fir, oak, and madrone woodlands to routes with significant elevation gain. You'll find both shaded, curvy descents and challenging climbs, often providing panoramic views of the southern San Francisco Bay and the Diablo Range.

Are there routes suitable for beginners or those looking for an easier ride?

Yes, while many routes offer significant climbs, there are options for easier rides with mostly well-paved surfaces. For example, the Manzanita Way โ€“ Tree Tunnel on Portola Road loop from Portola Valley is an easy 14.5-mile path offering a scenic ride through varied landscapes.

Where can I find challenging road cycling routes in the area?

For a more challenging experience, routes incorporating roads like Old La Honda Road are popular. The Old La Honda Road โ€“ Manzanita Way loop from Portola Valley is a moderate 20.15-mile route with significant elevation gain, often completed in under two hours. Another option is the Tree Tunnel on Portola Road โ€“ Lower Kings Mountain Road loop from Portola Valley, which leads through forested hills with notable climbs.

What are some scenic viewpoints or natural features I might encounter on a road bike ride?

Cyclists can enjoy glimpses of the southern San Francisco Bay, Palo Alto, and Stanford University's Hoover Tower from various points. The region is also known for its forested hills, including redwood and Douglas fir woodlands, and the tranquil Schilling Lake within the preserve (though not directly accessible by bike, its presence adds to the natural beauty of the area).

Is there parking available for road cyclists near the routes?

Many popular road cycling routes in the area, such as those incorporating Old La Honda Road or Alpine Road, often start from towns like Portola Valley or Woodside, where public parking may be available. It's advisable to check specific starting points for parking options.

What is the best time of year for road cycling in this region?

The region offers good cycling conditions for much of the year. Wildflowers can be seen until summer, and in autumn, black oaks and big-leaf maples provide vibrant scenery. Always check local weather forecasts, especially for potential fog or rain, as conditions can vary.

Are there any places to stop for refreshments or a break during a ride?

Yes, the nearby historic town of Woodside is a charming and convenient spot for cyclists to refuel. It features quaint shops, a market, a bakery, and outdoor seating, making it an ideal break point.

What do other road cyclists say about the routes near Thornewood Open Space Preserve?

The road cycling routes in this area are highly rated by the komoot community, with an average score of 4.6 stars from over 70 reviews. Over 5,000 road cyclists have used komoot to explore the varied terrain, often praising the challenging climbs, scenic descents, and picturesque natural beauty.

Are there any loop routes available for road cycling?

Yes, many of the popular routes are designed as loops. For instance, the Old La Honda Road โ€“ Old La Honda Road loop from Portola Valley is a moderate 9.4-mile option, and the Old La Honda Road loop from Woodside is another popular moderate loop covering about 12.3 miles.

How many road cycling routes are available in the Thornewood Open Space Preserve surrounding area?

There are over 50 road cycling routes available in the surrounding area of Thornewood Open Space Preserve, offering a wide range of distances and difficulties for cyclists to explore.

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