I’ve done several longer tours, mostly in Europe. Last weekend the rest of my family went away, so I made the most of it and did a miniature bike tour in Marin and Sonoma, Thursday afternoon to Sunday. This is a map of where I went. SMART rail, the Cal Park Hill Tunnel, and the doing-the-coast bike tourists at Bodega Bay from all over the place were highlights. Planned with the SF Rideshed map. All highly recommended. Highway 1 south from Bodega is pretty nice at the moment because there is construction that deters a lot of traffic.
China Camp hiker-biker is worth a special mention as a bike overnight destination from the City. I used it as a sort of lead-off, leaving home in Oakland at 4pm and arriving there ~6:30. It is super-close to the city, especially if you take the Larkspur Ferry (15 miles). Another dude was there who was doing S24O, departed after work from SF on Thursday, back to work from there Friday morning. Got himself an In-n-out dinner on the way. So, if you live in the city and want an evening away, nice place for a bike camping overnight.
Clicking the map image below will take to you a Google Maps view.