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Hidden trails are as abundant in the Bay Area as pimple-faced social media moguls are on the Internet. But keep in mind that the hills of Marin County are basically the birthplace of mountain biking. Before you tackle the under-the-radar rides, be sure to make a pilgrimage to some of the classic Bay Area spots. These three should be first on your list.
Mount Tamalpais via Shutterstock
Photo:
Mark R
