As of right now, this is my plan.
I am going to take a combo of BART and buses from Hayward(home) to The Chabot Space and Science Center in Oakland(trail head). I will then hike south along the Bay Area Ridge Trail through Redwood Park, camp at Lake Chabot and then continue on the Ridge Trail through Castro Valley, to the Five Canyons area.
The trail isn't complete from Five Canyons to Mission Peak so I am going to walk roads(Five Canyons Blvd, Fairview Ave. & Hayward Blvd.) to the edge of Garin Regional Park and then through to the Garin parking lot. From there, down Garin Ave. to Mission Blvd. to catch a bus back home.
Its 33 miles with a small detour to my friend's place near Fairview for a water resupply.