Castle Peak

Castle Peak is a 9,103 foot summit in the Sierra Nevada featuring three prominent spires that rise above the surrounding landscape. The mountain displays both volcanic and granite rock formations across its slopes and ridges.

The peak was originally named Mount Stanford by the Whitney Survey between 1860 and 1874. Its current name comes from the distinctive three spires that resemble castle turrets.

The Peter Grubb Ski Hut, constructed in 1938 near Castle Pass, functions as a Sierra Club facility offering overnight stays for outdoor enthusiasts.

Access to the summit begins at Interstate 80 exit 176, with the hike combining moderate climbing through lower sections with steeper terrain near the top. A mountain shelter near Castle Pass provides overnight accommodation options for hikers.

The mountain sits at a geological boundary where volcanic rock transitions to granite, creating springs and meadows filled with wildflowers. This transition zone supports different plant and animal habitats within a small area.

Location: California

Location: Nevada County

Part of: Sierra Peaks Section Peaks List

GPS coordinates: 39.36546,-120.34909

Latest update: December 11, 2025 18:11