Mount Sizer, Mountain summit in Henry W. Coe State Park, California, US
Mount Sizer is a summit in the Diablo Range located within Henry W. Coe State Park, rising to approximately 3,216 feet. Steep trails crisscross the mountain, winding through the terrain and offering expansive views across Santa Clara County from the top.
The mountain was accessed via a fire road built in the park's early days to reach Blue Ridge and surrounding areas. This infrastructure reflects early development within California's largest state park.
Mount Sizer serves as a challenging milestone for hikers participating in the San Francisco Bay Area Classic Peaks Challenge throughout the year.
The hike to the summit is steep and involves considerable elevation gain, requiring careful preparation. Bring plenty of water since reliable water sources are scarce along the route.
The mountain's northwest slope contains a section called 'The Shortcut' that rises 1,500 feet within 1.3 miles, creating a 22% grade incline.
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