From SFBC:

What will it take to make San Francisco a world-class bicycling city, where continuous prioritized crosstown bikeways offer safe, comfortable, inviting routes for people of all ages and abilities to ride? With Connecting the City, the SF Bicycle Coalition sets out a road map to the realization of a healthy, happy, sustainable San Francisco that’s great for bicycling. What will it look like, what will it take, and where do we start? Come along and examine one of three Priority Bikeways set out by Connecting the City to get us from here to there, by bike. SF Bicycle Coalition recreational rides are free for SFBC members (a $5 donation from non-members is appreciated); rain cancels rides.