T.P.
The East Bay Regional Park District is full of wonderful places to hike. Most are easy to moderate depending on what you would like to get out of the hike. My favorite place is Tilden Park in Berkeley. Other great places with easy hikes are Kennedy Grove Park in El Sobrante, right off of San Pablo Dam road. Also, Briones Park in Martinez has many entrances, and lots of trails. I've also hiked around Pinole Shoreline park (used to be an old dynamite plant there, very historical). Try also, Roberts Redwoods Park in Oakland. This park is loaded with awesome trails right below the Chabot Space and Science center. El Sobrante Ridge is smaller but still quite nice. There's always Mount Diablo and Mount Tamalpais. Coyote Point in Fremont is an old Ohlone Indian site full of historical points. Check out the link below for more info on East Bay Regional Parks. I've never been to Sibley Park in the East Oakland hills over by Fish Ranch Road , but was told its a great place for a hike also.
Good luck and have fun. Tilden is a must, several trails with beautiful views!
A girl scout leader mom of two girls.
T. Parini