Emily, Since you are near Golden Gate Park, you might want to do a Golden Gate bridge ride. I agree you should ride with someone else as SF isn't my favorite place to ride.

I don't know clubs in SF, but I would imagine you could find some. Also VeloGirls are based on the peninsula. They might have some women up in SF area.

Check with Maillotpois. She is a member here and has been quite helpful for visitors in the past. She lives in Mill Valley, just north of SF. She is a coach for the TNT NorCal group and a neat person to say the least!!!

Good luck!