what and where?
what kind of bike do you ride, what kind of riding do you want dirt, street or what. and were do you want to end up?
I live an hour north of s.f. and there is a lot of good roads up here. not much in the way of good off roading, but some fantastic roads. just north of me is some good off roads and camping and stuff.
or if you cross bay bridge east bay has great day rides as well.