Azor Oma, Marin Novato 9, Santa Cruz Heckler, Original Swing Bike, Schwinn Cruiser,
Then there's WOMBATS in Marin County. I've been considering sending my wife, as she's beginning to enjoy spin class a lot, but lacks the technical skills for MTB riding that I developed growing up and riding in Marin. She's too intimidated to ride trail with me so I think the WOMBATS thing would be really great. I've heard others knock Jacquie Phelan, but she has my deepest respect, no matter how kooky she may be. I wrote about her HERE. Any women here on the forums have any feedback on the WOMBATS rides?
Every year the Fremont Freewheelers holds their Cinderella Training. It runs from mid-January up until the Cinderella Classic metric century in April, put on by the Valley Spokesmen out of Livermore. It's road riding on all types of bikes. Women teaching women.