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Hiking trails & Routes
United States
California
San Mateo County

Borel Hill and Ancient Oaks Loop

Easy

2.7

(18)

64

hikers

Borel Hill and Ancient Oaks Loop

01:46

6.06km

160m

Hiking

The Borel Hill and Ancient Oaks Loop offers a delightful escape into the Santa Cruz Mountains, blending open meadows with ancient oak woodlands. You'll journey through rolling hills that open up to incredible vistas, including the Pacific Ocean and the San Francisco Bay from Borel Hill. The trail also winds through a section of old-growth forest, where monumental canyon live oaks create a truly impressive atmosphere, making it a standout among local hiking trails.

This easy 3.8-mile (6.1 km) hike involves about 521 feet (159 metres) of elevation gain, typically taking around 1 hour and 45 minutes to complete. It's a fantastic option for beginners or anyone looking for a rewarding outing without an intense climb. The best time of year to hike is spring, when the preserve bursts with vibrant wildflower displays, though clear days offer stunning views year-round.

Part of the Bay Area Ridge Trail, this loop is celebrated for its diverse terrain and panoramic viewpoints. Beyond the sweeping views from Borel Hill, you might spot local wildlife like deer and turkey. The preserve is a gem for those seeking natural features and a sense of tranquility, offering a rich experience that feels far removed from city life.

Last updated: June 9, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Waypoints

A

Start point

Parking

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1

1.06 km

Borel Hill

Highlight • Summit

Borel Hill is the highest point in the preserve at 2,575 feet (784 meters), with panoramic views of the Pacific Ocean to the west and across the San Francisco Bay to the east. In the spring, beautiful wildflowers are abundant. On a clear day, you can see all the way from San Jose to San Francisco. The vast scenery makes you feel on top of the world and is an excellent place to capture memorable photos.

Tip by

2

1.06 km

Borel Hill

Highlight • Summit

Spectacular 360° surround views from the top of the hill (2513 feet / 766 meters).

Tip by

3

2.04 km

Skyline Boulevard Viewpoint

Highlight • Viewpoint

A nice place to pause and catch the view before zipping down the hill on either side. There's a wooden fence where you can lean your bike for a moment.

Tip by

4

3.19 km

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.

Tip by

B

6.06 km

End point

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Way Types & Surfaces

Way Types

4.95 km

1.05 km

< 100 m

Surfaces

4.51 km

1.45 km

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (770 m)

Lowest point (630 m)

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Weather

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Today

Monday 6 July

23°C

9°C

11 %

Additional weather tips

Max wind speed: 9.0 km/h

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Frequently Asked Questions

Where can I park for the Borel Hill and Ancient Oaks Loop trail?

The trail is located within the Russian Ridge Open Space Preserve. Parking is typically available at the main preserve parking areas, which provide access to the various trailheads, including those leading to the Borel Hill and Ancient Oaks Loop. Specific parking details are usually found on the preserve's official website or signage at the entrance.

Is the Borel Hill and Ancient Oaks Loop dog-friendly?

Dogs are generally allowed on trails within the Russian Ridge Open Space Preserve, but they must be kept on a leash at all times. Please ensure you clean up after your pet to help maintain the preserve's natural beauty.

What is the best time of year to hike this trail?

The trail is beautiful year-round, but spring is particularly spectacular due to the vibrant wildflower displays. You'll see California poppies, dandelions, lupine, and purple owl clover. Clear days offer the best panoramic views, especially from Borel Hill.

Are there any fees or permits required to hike in Russian Ridge Open Space Preserve?

No, there are typically no entrance fees or permits required to access the trails within the Russian Ridge Open Space Preserve, including the Borel Hill and Ancient Oaks Loop. It's free to enjoy the natural beauty.

Is the Borel Hill and Ancient Oaks Loop suitable for beginners or families?

Yes, the trail is generally considered easy to moderate, making it suitable for beginners and families with a reasonable level of fitness. While there are some moderately steep sections, they are usually short. The varied terrain and beautiful scenery make it an enjoyable experience for many.

What kind of views can I expect on the route?

The trail offers expansive and diverse views. From the summit of Borel Hill, you can enjoy 360-degree panoramic vistas, often including the Pacific Ocean to the west and the San Francisco Bay to the east. Other viewpoints like Skyline Boulevard Viewpoint and View of the Pacific Ocean from Russian Ridge also provide stunning outlooks.

What is the terrain like on the Borel Hill and Ancient Oaks Loop?

The terrain is quite varied, transitioning from open, grassy hillsides to shaded sections winding through ancient oak and bay woodlands. You'll encounter both single-track paths and wider service roads, with surfaces composed primarily of dirt and gravel. Expect some flat sections and moderately steep climbs.

Does the trail connect with other well-known paths?

Yes, the route also passes through sections of the Bay Area Ridge Trail - 04 - San Francisco and Peninsula, the Ridge Trail, the Charquin Trail, the Hawk Ridge Trail, and the Alder Spring Trail.

What wildlife or plants can I see along the way?

You can expect to see diverse wildlife, including deer and various bird species. In spring, the meadows are carpeted with wildflowers like California poppies, dandelions, lupine, and purple owl clover. The Ancient Oaks Trail portion features peaceful woods with ferns and ancient oak and bay trees.

Are there cafes or accommodation options near the trailhead?

While the preserve itself is a natural area, you can find cafes, pubs, and accommodation options in the nearby towns along Skyline Boulevard or in the surrounding communities. It's advisable to check specific locations and opening hours before your visit.

What should I bring for a hike on this trail?

For a comfortable hike, bring plenty of water, especially on warmer days, as there are no water sources directly on the trail. Wear appropriate hiking shoes, layers of clothing for changing weather, sun protection (hat, sunscreen), and a map or GPS device. Binoculars can enhance your wildlife and view-spotting experience.

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