Here are some of my routes in the Marin, Napa and Sonoma areas:
http://ridewithgps.com/users/2183/routes
You can pretty much pick and choose by distance and elevation gain. They are all great rides - low traffic (other than the southern part of the coast on a weekend - avoid SF to Stinson on weekends after 9 am).
I don't really have time just now to sort through them and give you a few selections - I have to run out the door. But this should get you started. The rides entitled "Death Ride" are training rides I created for coaching the Death Ride and are generally rigorous and beautiful.
Have fun! Riding in Yosemite is great as well - though you will want to avoid the valley for too much riding in late July. Do Tioga Road (tuloumne meadows) and the road to Glacier point - stunning!