The remote and beautiful wilderness areas of the Ohlone Wilderness are accessible only through the Ohlone Wilderness Trail. The Ohlone Trail traverses 28 miles of mountains and canyons in southern Alameda County and is open to hikers and equestrians. Trail bicycles and motor vehicles are not permitted.
Access through: Del Valle Regional Park, Sunol Regional Wilderness, Mission Peak Regional Preserve.
http://www.tripleblaze.com/trail.php?c=3&i=7335