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Routes
Hiking trails & Routes
United States
California
San Mateo County
Redwood City

Blue Oak and Polly Geraci Trail

Easy

3.2

(17)

66

hikers

Blue Oak and Polly Geraci Trail

01:44

5.95km

160m

Hiking

The Blue Oak and Polly Geraci Trail offers an easy hiking experience within Pulgas Ridge Open Space Preserve. You will cover 3.7 miles (5.9 km) with a gentle elevation gain of 535 feet (163 metres), which typically takes about 1 hour and 43 minutes to complete. As you hike, you will pass through diverse scenery, from shaded blue oak forests to more open chaparral slopes, with the Polly Geraci section guiding you through a moist, wooded area often described as a "tunnel of green." From higher points, you can enjoy views of the Santa Cruz Mountains and Silicon Valley.

This trail system is known for being very dog-friendly, even featuring an off-leash dog area within the preserve, so feel free to bring your canine companion. Access to Pulgas Ridge Open Space Preserve is generally straightforward, making it an easy destination to reach. There are no specific warnings about snow conditions, road closures, or permit requirements for this particular route, so you can plan your visit with ease.

Beyond the varied plant life, keep an eye out for local wildlife, especially deer, which are often seen on the eastern side of the canyons. If you visit in spring, you might also spot various wildflowers adding splashes of color to the landscape. The trail provides a great opportunity to connect with nature and enjoy the outdoors without needing extensive preparation or advanced hiking skills.

Last updated: April 23, 2026

Tips

Your route passes through protected areas

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Waypoints

A

Start point

Parking

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3.78 km

Viewpoint

Viewpoint

B

5.95 km

End point

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Way Types & Surfaces

Way Types

5.95 km

Surfaces

4.51 km

1.32 km

106 m

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Elevation

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Highest point (220 m)

Lowest point (80 m)

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Weather

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Today

Thursday 14 May

21°C

9°C

0 %

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Max wind speed: 32.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Where can I park to access the trails at Pulgas Ridge Open Space Preserve?

Parking for the Blue Oak and Polly Geraci Trails is available at the main trailhead for Pulgas Ridge Open Space Preserve. It's generally recommended to arrive earlier on busy days to secure a spot.

Are dogs allowed on the trails, and what are the rules?

Yes, the trails are very dog-friendly! Pulgas Ridge Open Space Preserve is notable for its dog-friendly atmosphere, including an off-leash dog area. Many hikers praise the responsible behavior of dog owners here.

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

Spring is an excellent time to visit, as you'll see various wildflowers like filarees, thistles, yarrow, poppies, and mission bells. The lower, wooded sections offer shade, making it pleasant even on warmer days, while upper areas can be more exposed.

Do I need a permit or pay an entrance fee for Pulgas Ridge Open Space Preserve?

No, there are typically no permits required or entrance fees to access Pulgas Ridge Open Space Preserve, where the Blue Oak and Polly Geraci Trails are located. It's open to the public for enjoyment.

What is the terrain like on the Blue Oak and Polly Geraci Trails?

The terrain offers a diverse experience with a mix of inclines and declines. You'll find shaded, wooded areas, especially in the lower sections, transitioning to more open chaparral-covered slopes at higher elevations. Some parts might feel like a 'roller-coaster of ups and downs'.

What kind of scenery and natural features can I expect to see?

You'll hike through lovely blue oak forests, moist wooded areas described as a 'tunnel of green,' and chaparral. Keep an eye out for various wildflowers in spring and magnificent views of the Santa Cruz Mountains and Silicon Valley from higher points. Deer are also a common sight.

Does this route connect with other trails in the preserve?

Yes, the Blue Oak and Polly Geraci Trails are part of a larger network within Pulgas Ridge Open Space Preserve. This route specifically covers sections of the Hassler Loop Trail, Dick Bishop Trail, Cordilleras Trail, and Hassler Trail, allowing for customizable loop hikes.

Are there any viewpoints or landmarks along the way?

From higher elevations, particularly near the 'summit' of Pulgas Ridge, you can enjoy expansive views of the Santa Cruz Mountains and Silicon Valley. The blue oak forest itself is a notable natural feature, providing a sense of isolation.

Is this trail suitable for beginners or families?

The route is generally considered easy, with an overall elevation gain of about 163 meters. While some sections have gentle climbs, the grades are manageable, making it suitable for most hikers, including families looking for an enjoyable outdoor experience.

What should I bring for a hike on these trails?

Given the varied terrain and potential for open sections, it's advisable to bring water, wear comfortable hiking shoes, and consider sun protection like a hat and sunscreen. Layers are also good for adapting to temperature changes between shaded and open areas.

Are there any specific strategies for hiking this trail, such as a recommended direction?

The preserve offers flexibility to connect various trails for different experiences. While there isn't a strict recommended direction, starting on the Blue Oak Trail often involves switchbacks and an ascent with emerging views, while the Polly Geraci Trail can offer a steady, gentle climb through trees when heading uphill.

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