This is one of the longer paths in the entire Bay Area, totaling 32 miles, although you don't have to do the entire thing.

Its perfect if you find yourself looking for a ride to take in the surrounding areas of San Francisco. Almost entirely flat, it takes you through residential and urban settings from Concord to Livermore

Limited parking available at trailhead. Parking also available at the Park and Ride lot on the east side of Hwy 680.