TRAIL MAP

Sierra Azul Open Space Preserve and Lexington Reservoir:

You are rewarded with panoramic views of Mount Umunhum, the Santa Clara Valley, and the Inner and Outer Coast Ranges on this long trek through the Midpeninsula Regional Open Space District’s largest preserve.
11.7miles

11.7 miles one-way; car shuttle possible

DIFFICULTY: Difficult

From: Jacques Ridge Parking Area, Gate SA6, in San José

To: Lexington Reservoir in Los Gatos

You are rewarded with panoramic views of Mount Umunhum, the Santa Clara Valley, and the Inner and Outer Coast Ranges on this long trek through the Midpeninsula Regional Open Space District’s largest preserve. Beginning along the lower wooded slopes of Mount Umunhum, the trail climbs to a chaparral landscape up Mount El Sombroso. The remainder of the route undulates northwest over rugged hills and makes a long 3.9-mile descent to Lexington Reservoir. Choose a cool day to hike or ride this exposed fire road.

Elevation Gain/Loss 1,830 feet/2,460 feet one-way

This trail description is excerpted from the 2019 Guidebook. For details on all trails, trailheads and more buy the book from Wilderness Press.

For more resources to plan your trip, visit our Trail Tools page.

DONATE TO SUPPORT THE TRAIL

We're a membership organization built of trail lovers like you. Become an important part of the Ridge Trail community.
Donate to complete the trail