Three Sisters is my favorite local hike from San Diego because the hike is challenging but rewarding with its three waterfalls and great swimming holes
Hidden Canyon is a strenuous hike up the side of the canyon wall, but it has great views of a hanging canyon, waterfall, and even a natural small arch! Warning: lots of switchbacks! Not recommended for people who are scared of heights, since there is a section of slickrock and a chain to guide you.
