Mount Umunhum Trail via Bald Mountain Trail

Trail in Sierra Azul Open Space Preserve · Santa Clara County, California

7.8 mi · 1,093 ft gain · 3h 9m · Out & back.

A challenging ~8.2 mi climb (1,187 ft gain) combined with the nearly-level Bald Mountain Trail, crossing a grassy ridgeline to reach the 3,486 ft Umunhum summit and its ceremonial staircase leading to the historic Cold War radar tower, "the Cube."

Trailhead: 37.1594, -121.8759.

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