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San Mateo County

Portola Valley

The best MTB trails around Portola Valley

4.8

(55)

681

riders

19

rides

Mountain biking around Portola Valley is characterized by its location within the Santa Cruz Mountains, offering a diverse network of trails. The region features wooded hills, open space preserves, and a mix of redwood, fir, and oak forests. Riders can expect varied terrain, including rolling hills, sandstone canyons, and trails that provide scenic views of the San Francisco Bay and the Pacific Ocean.

Best mountain bike trails around Portola Valley

  • The most popular mountain bike trail is Old Ranch Trail…

Last updated: April 26, 2026

5.0

(4)

42

riders

#1.

Old Ranch Trail – White Oak Trail loop from Portola Valley

38.9km

04:33

1,080m

1,080m

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

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Hard

Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard
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Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate

Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard
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Popular around Portola Valley

Bay Area Ridge Trail β€” Hiking the backbone of The Bay

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Hiking around Portola Valley

Road Cycling Routes around Portola Valley

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Bay Area Ridge Trail β€” Hiking the backbone of The Bay

Hiking Collection by

Andrus

Tips from the Community

RalphGrundler
April 4, 2026, White Oak Trail

Make sure White Oak trail is open before you go.

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From up here on the ridge you get great sweeping views across the foothills. On a clear day you can see out west to the Pacific Ocean.

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This 3,436-acre expanse offers a vibrant tapestry of nature, just waiting to be explored. Millennia before Silicon Valley sprouted, Monte Bello Ridge and Black Mountain stood sentinel over the Santa Clara Valley. Native American tribes frequented the area, leaving behind petroglyphs and village sites whispering tales of the past.

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Nitram X2
March 16, 2025, Borel Hill

Borel Hill is my favorite place to watch spring flowers. The western slope near ancient oaks (5-10min west of Borel Hill) are covered with orange California Poppies and purple flowers starting in April. Borel Hill itself peaks around mid May and has a wide variety of flowers. The show lasts only a few weeks until end of May. The peak time and flower intensity varies from year to year, so come several times between April and May. There is small summit NW of Borel Hill and a narrow dirt trail leads you to a rock within 2 min. The rock is big enough for 2-3 to sit on. On a sunny day, the rock is nice warm even if the air is cold. Good views on the ocean and the Bay.

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Here, the Steve's Creek Nature Trail and the Canyon Trail intersect. A lovely patch of grass surrounds the junction, making it an ideal spot for a break.

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Russian Ridge is an incredible 3,137-acre preserve that boasts a rich diversity of plants and wildlife, steep forested canyons, and grasslands, with abundant wildflowers in the spring. The open ridge tops provide breathtaking panoramic views of the Santa Cruz Mountains, the Bay Area, and the Pacific Ocean, making it one of the most scenic preserves in the area to enjoy a picturesque ride.

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At the convergence of the Long Ridge Trail and Long Ridge Road, you will find the Wallace Stegner Bench. This overlook was one of the favorite places of author and conservationist Wallace Stegner. There are panoramic views of the Santa Cruz Mountains and the Pacific Ocean to be had from here. However, if you come up by bike, the dirt trail is best suited for a touring bike with decent tires or a gravel bike.

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This 3,436-acre expanse offers a vibrant tapestry of nature, just waiting to be explored. Millennia before Silicon Valley sprouted, Monte Bello Ridge and Black Mountain stood sentinel over the Santa Clara Valley. Native American tribes frequented the area, leaving behind petroglyphs and village sites whispering tales of the past.

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Frequently Asked Questions

How many mountain bike trails are available in Portola Valley?

Portola Valley offers a network of over 10 mountain bike trails, catering to various skill levels. These routes traverse diverse landscapes, from wooded hills to open space preserves, providing a range of experiences for riders.

What kind of terrain can I expect on mountain bike trails in Portola Valley?

You'll encounter a diverse range of terrain, including wooded hills, open grassland ridges, and forests of redwood, fir, and oak. Some trails also feature sandstone canyons and rolling hills, ensuring an engaging and varied riding experience.

Are there mountain bike trails suitable for beginners in Portola Valley?

While many routes in Portola Valley are rated moderate to difficult, some trails like the Borel Hill loop from Windy Hill Open Space Preserve are considered moderate. The region research mentions popular green difficulty singletracks such as Portola Trail, Meadow Trail, Lake Trail, and Valley Oak Trail, which might be more suitable for those newer to mountain biking, though specific komoot routes for these are not listed in the guide data.

Which trails offer the best scenic views in Portola Valley?

Many trails in Portola Valley boast breathtaking vistas. From Windy Hill Summit, you can enjoy panoramic views of the San Francisco Bay, Stanford University, Mount Tamalpais, Mount Diablo, and the Pacific Ocean. Borel Hill also offers 360-degree views, especially beautiful with wildflowers in spring. The Old Ranch Trail – White Oak Trail loop from Portola Valley and Indian Creek Trail – Arastradero Lake loop from Los Trancos Woods also offer extensive riding through varied landscapes with notable elevation changes and scenic points.

Are there any loop mountain bike trails in Portola Valley?

Yes, Portola Valley features several excellent loop trails. Popular options include the Old Ranch Trail – White Oak Trail loop from Portola Valley, the Stevens Creek Nature Trail loop from Enid Pearson-Arastradero Preserve, and the Borel Hill loop from Windy Hill Open Space Preserve. These loops offer diverse scenery and varying levels of difficulty.

What natural features or landmarks can I see along the mountain bike trails?

Portola Valley's trails are rich in natural beauty and points of interest. You can explore redwood groves, sandstone canyons, and open grasslands. Notable landmarks and features include Windy Hill Summit, Borel Hill, and the Skeggs Point viewpoint. The Woodside Store (Historic Site) – Skeggs Point loop from Portola Valley passes by a historic site, and the Water Wheel Creek Trail (not in guide data) is known for remnants of an old water wheel and abandoned gold mines.

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

Portola Valley offers good mountain biking conditions for much of the year. The spring brings beautiful wildflowers, especially around Borel Hill. Winter can also be a good time, with Windy Hill Open Space Preserve being known for paragliding and hang gliding during this season. Always check local conditions before heading out, especially after rain, as some trails may be affected.

What do other mountain bikers enjoy most about Portola Valley?

The mountain bike trails in Portola Valley are highly rated by the komoot community, with an average score of 4.8 stars from over 70 reviews. Riders frequently praise the diverse terrain, the stunning scenic views of the San Francisco Bay and Pacific Ocean, and the well-maintained network of trails that cater to various skill levels.

Are there any advanced mountain biking routes in Portola Valley?

Yes, Portola Valley offers several challenging routes for experienced riders. The guide data highlights multiple difficult trails, including the Old Ranch Trail – White Oak Trail loop from Portola Valley, the Indian Creek Trail – Arastradero Lake loop from Los Trancos Woods, and the Woodside Store (Historic Site) – Skeggs Point loop from Portola Valley. The Stevens Creek Nature Trail (not in guide data) is also described as a hard ride requiring good fitness and advanced skills.

Can I spot wildlife while mountain biking in Portola Valley?

Yes, the diverse natural preserves in Portola Valley offer opportunities for wildlife spotting. Coal Mine Ridge Nature Preserve, with its oak woodlands, is known for birdwatching and sightings of animals like bobcats. The varied forests and open spaces throughout the region provide habitats for a range of local fauna.

What is the typical duration for mountain bike rides in Portola Valley?

Ride durations vary significantly depending on the trail length and difficulty. For example, the Old Ranch Trail – White Oak Trail loop from Portola Valley typically takes around 4 hours 33 minutes, while the Borel Hill loop from Windy Hill Open Space Preserve can be completed in about 1 hour 57 minutes. There are options for shorter or longer rides to suit your schedule and fitness level.

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