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Rock City to the Summit of Mount Diablo

Danville, California



7.77 miles

Elevation Gain

2382 ft

Route Type



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Added by The Outbound Collective

The Rock City to Mount Diablo summit trail in Danville, California, is a challenging yet rewarding hike. The trail spans approximately 7.77 miles and is rated as difficult due to its steep inclines and rocky terrain. Hikers can expect to spend around 5 hours to complete the round trip. The trail begins at Rock City, a unique area filled with large sandstone formations. As you ascend, you'll pass through a variety of ecosystems, including oak woodlands and chaparral shrublands. The trail offers panoramic views of the surrounding valleys and, on clear days, the Sierra Nevada and Farallon Islands. The summit of Mount Diablo is the trail's highlight, standing at 3,849 feet. Here, you'll find an observation deck and a visitor center. Hikers are advised to bring plenty of water, wear sturdy shoes, and check the weather before setting out. The trail is open year-round, but spring and fall offer the most comfortable hiking conditions.
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