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Hiking trails & Routes
United States
California
Santa Clara County

Halls Valley to Washburn Loop

Moderate

4.7

(2447)

8,374

hikers

Halls Valley to Washburn Loop

04:22

14.2km

530m

Hiking

The Halls Valley to Washburn Loop in Joseph D. Grant County Park offers a diverse hiking experience, winding through oak-dotted grasslands, thin woods, and open meadows. You'll encounter wide fire road-width paths that transition into sustained climbs, leading to spectacular panoramic views of the Bay Area, including the Santa Cruz…

Last updated: June 9, 2026

Tips

Your route passes through a protected area

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Waypoints

A

Start point

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1

75 m

Grant Lake - Joseph D Grant County Park

Highlight • Lake

The easy trail around the Southeast side of the lake is a great starting point for excursions into the North of JD Grant Park

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2

4.72 km

Nice view on Grant Lake

Highlight • Viewpoint

3

14.1 km

JD Grant Park

Highlight • Forest

The Joseph D. Grant County Park is the largest country park in the Santa Clara area of California. Joseph was the wealthy son of a merchant who bought this land …

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B

14.2 km

End point

Parking

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Way Types & Surfaces

Way Types

12.3 km

1.85 km

< 100 m

Surfaces

6.61 km

5.45 km

1.88 km

231 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 (880 m)

Lowest point (450 m)

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Weather

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Today

Saturday 11 July

29°C

13°C

0 %

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Max wind speed: 11.0 km/h

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Frequently Asked Questions

What is the estimated hiking time and difficulty for this route?

The Halls Valley to Washburn Loop is a moderate hike, covering approximately 14.2 kilometers (8.8 miles) with an elevation gain of about 528 meters (1,732 feet). It typically takes around 4 hours and 22 minutes to complete. While generally moderate, be aware that the Washburn Trail section is known for its steep grades, which can be quite challenging, especially when ascending.

Is this a loop trail or an out-and-back route?

This route is designed as a loop, combining sections of the Halls Valley Trail and the Washburn Trail within Joseph D. Grant County Park. This allows you to experience diverse scenery without retracing your steps.

Where can I park for the Halls Valley to Washburn Loop?

The Halls Valley to Washburn Loop is located within Joseph D. Grant County Park. You can typically find parking at the park's main entrance or designated trailheads within the park. Always check park signage for specific parking regulations and fees.

What is the terrain like on this route?

The terrain varies, featuring dirt singletrack trails, rolling hills, oak woodlands, and open grasslands. The Halls Valley Trail offers a moderate climb, while the Washburn Trail is known for its steep, challenging grades. Much of the route is exposed, with limited tree cover, so be prepared for sun exposure.

What can I see along the route?

Along the way, you'll encounter beautiful scenery and points of interest. You'll pass by Grant Lake - Joseph D Grant County Park and enjoy a Nice view on Grant Lake. The higher elevations, particularly along the Washburn Trail, offer breathtaking panoramic views of San Jose, the surrounding hills, and on clear days, even glimpses of the Lick Observatory and the Santa Cruz Mountains.

What wildlife or plants might I encounter?

The park is home to various wildlife, including coyotes and wild boars. You'll also see diverse flora such as oak trees and coyote brush. In mid-spring, the park is particularly known for its vibrant wildflower displays, adding a splash of color to the landscape.

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

The best time to hike this loop is during the cooler months, from late fall to early spring, to avoid the heat, as much of the trail is exposed. Mid-spring is also excellent for wildflower viewing. If hiking during warmer periods, start early in the day and carry plenty of water.

Is the Halls Valley to Washburn Loop dog-friendly?

Yes, dogs are generally permitted on trails within Joseph D. Grant County Park. However, they must be kept on a leash at all times. Please remember to pack out all pet waste to help keep the park clean for everyone.

Do I need a permit or pay an entrance fee for Joseph D. Grant County Park?

Yes, Joseph D. Grant County Park typically charges an entrance fee per vehicle. You can find current fee information and any permit requirements on the Santa Clara County Parks website: santaclaracounty.gov. It's always a good idea to check their site before your visit for the most up-to-date information.

Does this trail intersect with other well-known paths?

Yes, the route utilizes several established trails within Joseph D. Grant County Park. It incorporates significant sections of the Washburn Trail and the Halls Valley Trail, and also passes through parts of the Canada de Pala Trail, Los Huecos Trail, and a small segment of the Bay Area Ridge Trail - 03 - South Bay.

What's an insider tip for hiking this loop?

Given the significant elevation gain and exposed sections, consider hiking the loop in a counter-clockwise direction if you prefer to tackle the steepest parts of the Washburn Trail on the descent. This can make the overall experience feel less strenuous on your ascent. Also, starting early in the morning is highly recommended, especially on warmer days, to enjoy cooler temperatures and potentially encounter fewer people.

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