Outing of the East Bay Casual Hikers. We started at Rudgear Park off Stewart Ave. and took the Sugarloaf-Shell Ridge trail through the neighborhood into Diablo Foothills Regional Park. A series of trails took us through the Castle Rock Reg. Rec. area and then to our rest stop at Bob Pond. Our return was past Borges Ranch into the eastern edge of the Shell Ridge Open Space before returning to the start.