Quote Originally Posted by maillotpois View Post
No - there is a ferry to Angel Island. I believe there are then dirt roads there.
IIRC, the road encircling the island is paved for the most part, with some dirt road as well.

Angel Island is a *really* nice excursion, but it could eat up a lot of your time with the ferry crossings- since you're going to be there after the summer season is over, the ferry schedule might be scaled back.

Given your time constraints, perhaps a ride across the GG bridge into Sausalito and maybe on to Tiburon and a ferry ride back into San Francisco might be nice.