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Road cycling routes
United States
California
San Mateo County

Portola Valley

The best road cycling routes around Portola Valley

By Fede from komoot

·

Updated May 29, 2026

If you’ve ever tried to plan road cycling around Portola Valley, you know how many options pop up, making it tough to figure out which routes are genuinely worth your time and effort. It’s easy to get lost in a sea of choices, wondering which climbs deliver the best views or which loops offer the smoothest ride. That’s where we come in. Our komoot community has ridden, mapped, and reviewed countless routes here, so we’ve done the legwork to bring you a curated shortlist of the ones that truly earn their place.

Road cycling around Portola Valley is defined by its rolling hills, tree-lined roads, and open vistas, offering everything from moderate hills to longer, challenging ascents. You’ll find varied terrain that sweeps past residential areas and natural preserves, often with stunning views of the Crystal Springs reservoir and the San Francisco Bay from elevated points. While the riding is great year-round, keep an eye out for "Bicycle Sundays" on Cañada Road, when a section is closed to cars for a truly peaceful experience.

If you only have time for one ride, we’d point you straight to the Old La Honda Road – Old La Honda Road loop from Portola Valley. This moderate 9.4 miles (15.1 km) route is a local favorite for a reason, offering a consistent workout and a real taste of the area's character. For something a bit longer with varied terrain, the Rossotti's Alpine Inn – Dwight Crowder Path loop from Los Trancos Open Space Preserve is a fantastic moderate option at 14.9 miles (24.0 km), leading through wooded areas and open vistas. With over 10,000 road cyclists having explored Portola Valley with komoot, you’re in good company.

If you only do 3 of these routes

  1. 1

    Junipero Serra Boulevard loop from West Menlo Park
  2. 2

    Old La Honda Road – Old La Honda Road loop from Portola Valley
  3. 3

    Rossotti's Alpine Inn – Dwight Crowder Path loop from Los Trancos Open Space Preserve

Compare these routes at a glance

Trail

Distance

Elevation

Difficulty

Junipero Serra Boulevard loop from West Menlo Park

50.1 km

930 m

Hard

Old La Honda Road – Old La Honda Road loop from Portola Valley

21.4 km

510 m

Moderate

Rossotti's Alpine Inn – Dwight Crowder Path loop from Los Trancos Open Space Preserve

24.0 km

470 m

Moderate

Portola Road – Old La Honda Road loop from Portola Valley

14.7 km

260 m

Easy

Alpine Road loop from Portola Valley

14.5 km

200 m

Easy

1.

Junipero Serra Boulevard loop from West Menlo Park

50.1km

02:58

930m

930m

The Junipero Serra Boulevard loop from West Menlo Park offers a dynamic road cycling experience, blending dedicated bike infrastructure with varied terrain. You'll pedal past the serene Crystal Springs Reservoir and follow Stevens Creek through forested sections, enjoying picturesque views of rolling hills. This route is a favorite for its combination of safety and scenic beauty, providing a true Bay Area cycling adventure.

Planning your ride, this difficult 31.1-mile (50.1 km) loop with 3059 feet (932 metres) of elevation gain will take you about 2 hours and 57 minutes. While the boulevard features generous bike lanes, car traffic can be present, especially during peak commute times. To enjoy the route with fewer fellow cyclists, aim for a weekday ride or an early start on a weekend morning, as good weather can make it quite popular.

Junipero Serra Boulevard is a vital artery for the local cycling scene, known for its well-maintained, paved surfaces and traffic calming measures that enhance safety. It serves as a gateway to many other popular routes, making it a cornerstone for cyclists in West Menlo Park and the surrounding areas. This loop is an excellent choice if you're looking for a substantial workout on a route that feels both connected to the community and immersed in natural beauty.

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4.

Portola Road – Old La Honda Road loop from Portola Valley

14.7km

00:47

260m

260m

The Portola Road – Old La Honda Road loop is a classic road cycling route that takes you through some of the Bay Area's most picturesque landscapes. You'll start with a gentle roll on Portola Road before tackling the renowned Old La Honda Road climb, a sustained ascent through oak woodlands that gradually gives way to tranquil redwood groves. This 9.1-mile (14.7 km) loop, with 838 feet (255 metres) of elevation gain, offers a rewarding challenge for cyclists, despite its overall easy rating, and can be completed in about 46 minutes.

Planning your ride is straightforward, as the route is well-known and easily accessible from Portola Valley. While the climb up Old La Honda Road is a highlight, its narrow, twisty nature means descending it is generally discouraged; many cyclists opt for alternative routes like Highway 84. Parking can be found in Portola Valley, though it's wise to arrive early on busy days to ensure a spot. The consistent grade and shaded sections of the climb make it enjoyable even during warmer periods.

Old La Honda Road is famous among local cyclists as a

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5.

Alpine Road loop from Portola Valley

14.5km

00:44

200m

200m

The Alpine Road loop from Portola Valley offers a delightful, quick escape for road cyclists, winding through the scenic Portola Valley community. You'll experience a consistent climb on the paved road, rewarded by stunning mountain views before a narrow, twisty descent under moderate tree cover. It's a perfect ride for those seeking a manageable workout and beautiful surroundings without an all-day commitment.

This easy racebike route covers 9.0 miles (14.5 km) with 668 feet (203 metres) of elevation gain, typically taking about 44 minutes to complete. Parking is usually accessible in Portola Valley, making it convenient to start your ride. While the paved road is generally good, be mindful that shoulders are often absent, and light car traffic can be present.

Historically, parts of Alpine Road were open to vehicular traffic before being repurposed into trails, highlighting the area's evolution for cyclists. This particular loop provides a taste of the region's natural beauty and challenging terrain, distinct from the much steeper unpaved sections like Joaquin Road, which are better suited for mountain or gravel bikes.

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Tips from the Community

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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This mostly paved bike trail alongside Alpine Road is great for bike commuting — just don't run over any slower trail users! The trail runs all the way from Portola Valley to Stanford, offering some nice shade along the way. The brief moments of unpaved trail are near the Portola Valley end.

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Didn’t OLR used to turn into Dirt before reaching Skyline? Is it all pavement now?? Scott

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A sculpture made by Augustin Rodnin

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good

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Page Mill Road is a classic route for cyclists looking for a challenge, with its steep climbs, sharp switchbacks, and stunning views of Silicon Valley. Starting near Palo Alto and climbing into the Santa Cruz Mountains, the ride tests your legs but rewards you with breathtaking scenery. Be prepared for varying gradients, especially in the lower sections, and pack plenty of water—the climb can be intense, especially on warmer days.

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Sue
December 31, 2024, Rossotti's Alpine Inn

This fantastic tavern, founded in 1852, is the second oldest in the state. It features a large, beer garden-style outdoor area with plenty of shade. An extensive beer and food menu makes it a perfect stop to enjoy a brew and some great food after a ride.

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Tim
November 4, 2024, Junipero Serra Boulevard

While this is an expressway, there is good room for safe riding and most of the day it isn't too heavily trafficked which makes for a great, rolling straight run

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Frequently Asked Questions

How many road cycling routes are available around Portola Valley?

There are over 170 road cycling routes around Portola Valley, offering a wide range of options for different skill levels. You'll find everything from easy, leisurely rides to more challenging ascents.

Are there easy road cycling routes suitable for beginners in Portola Valley?

Yes, Portola Valley offers several easy road cycling routes. A great option for a relaxed ride is the Portola Valley – Rossotti's Alpine Inn loop from Enid Pearson-Arastradero Preserve, which is about 11.9 miles (19.2 km) long and features less strenuous terrain. Another easy route is the Manzanita Way – Tree Tunnel on Portola Road loop from Portola Valley.

What are some challenging road cycling routes for experienced riders in Portola Valley?

For experienced road cyclists seeking a challenge, the Old La Honda Road – Manzanita Way loop from Portola Valley is highly recommended. This 20.1-mile (32.4 km) route includes significant elevation gain, providing a demanding workout. Another challenging option is the Old La Honda Road loop from Stanford Linear Accelerator Center National Accelerator Laboratory, known for its substantial climbs.

Are there any good loop routes for road cycling in Portola Valley?

Portola Valley is well-suited for loop routes, allowing you to start and end your ride in the same location. Popular options include the Old La Honda Road – Manzanita Way loop and the Rossotti's Alpine Inn – Junipero Serra Boulevard loop, both offering varied terrain and scenic views.

What kind of terrain can I expect on road cycling routes around Portola Valley?

Road cycling routes around Portola Valley are characterized by rolling hills, tree-lined roads, and scenic valleys. You'll encounter a mix of challenging climbs and more gentle sections, often passing through residential areas and natural preserves. Elevations range from moderate hills to longer ascents, providing diverse terrain.

What is the best time of year to go road biking in Portola Valley?

The best time for road biking in Portola Valley is generally during the spring and fall months when temperatures are mild and the weather is pleasant. Summers can be warm, especially inland, while winters are typically mild but can bring occasional rain. Always check the local forecast before heading out.

What can I see along the road cycling routes in Portola Valley?

Many road cycling routes in Portola Valley offer access to scenic viewpoints and natural attractions. You might pass by the unique Tafoni Sandstone Formation, enjoy panoramic views from Windy Hill Summit, or discover the Byrne Preserve Lookout. The region's natural beauty is a highlight of any ride.

Are there any notable landmarks or points of interest near the road cycling trails?

Beyond the natural beauty, you can find interesting landmarks such as Black Mountain, which offers impressive vistas. Many routes also pass through charming residential areas with unique architecture and mature trees, adding to the scenic appeal.

What do other road cyclists enjoy most about road cycling in Portola Valley?

The area is highly rated by the komoot community, with an average score of 4.6 stars from over 280 reviews. Reviewers often praise the diverse terrain, the beautiful tree-lined roads, and the challenging climbs that make for a rewarding cycling experience. The well-maintained roads and scenic vistas are frequently highlighted.

Is there parking available near the road cycling routes in Portola Valley?

Parking is generally available at various access points and trailheads around Portola Valley. Many routes start from or pass through areas with public parking facilities, including local parks or designated roadside spots. It's advisable to check specific route details for recommended starting points with parking.

Are there cafes or places to stop for refreshments along the road cycling routes?

Yes, several routes pass by or are in close proximity to local cafes and eateries, particularly in the more developed areas of Portola Valley and neighboring towns. For example, the Portola Valley – Rossotti's Alpine Inn loop includes Rossotti's Alpine Inn, a popular stop for cyclists.

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