There is a bike path at the end of Olympic Blvd that will go up into Moraga next to St Mary's Rd turn left on Moraga road and it will become Canyon Rd go out of town and turn right on Pinehurst Rd. It will be a gradual climb for a little bit and then gets steep torwards Skyline after the real tight hairpin, 39x25 or better. Park Blvd will drop you down into Oakland.