Off the top of my head for Marin/sonoma: Fairfax / Bolinas Rd, Mt. Tam, Marshal /Petaluma Rd, Bohemian hwy, Lucas Valley Rd, Cazadero Rd to Kings Mtn to either Annapolis or Skaggs / Springs Rd and of course you just ride up over Tam and enjoy Hwy 1 as far as you want to go. Just so you know, some of those roads are quite goaty. And there are more roads to explore
East Bay: Grizzly Peak to Skyline to Redwood to Palomares to Calaveres then make your way to Mt. Ham up and over to Mines. And there are more roads to explore.
South: Hwy 35 to Alice’s and go from there, more 35 to 9, 84 to the coast, 84 to Pescasero Rd. Lots of side (and more goaty) roads in the SC mountains Tunitas, Alpine etc, you could just explore and have a blast.
Have fun exploring.