Below are the Good hiking information sources
1. SF south bay and Peninsula
http://www.bahiker.com/
http://openspace.org/
2. Other sites
http://www.slackpacker.com
3. APPs
http://www.everytrail.com/ (has free mobile app to track the route)
App - http://www.everytrail.com/mobile - app available for iphone, andriod, windows mobile, blackberry
