SF Bay Area Mountain Biking Routes

[ARReports]

Here's a link to mountain biking routes and maps in the San Francisco Bay Area -- most of the rides are in the East Bay, but there are also a number in Marin County:

http://zdap-mb.blogspot.com

Areas include Briones Park, Las Trampas Park, Carquinez Shoreline, Mount Diablo, Shell Ridge, the Marin Headlands, and Point Reyes.