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The Ultimate
Contra Costa Guide

By Stephanie Marrone Real Estate

*Updated Regularly*

Hike Mt. Diablo to Rock City

Hike Mt. Diablo to Rock City


Length 7.6 mi

Elevation gain 2,201 ft

Route typeOut & back

Rock City to the Summit of Mount Diablo is a 7.6 mile heavily trafficked out and back trail located near Danville, California that features beautiful wild flowers and is rated as difficult. The trail offers a number of activity options and is accessible year-round.

It’s an amazing hike with rewarding views at the Summit… roughly a 4 hour hike!

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