Join Mayor Ed Lee, San Francisco Supervisors, civic and business leaders and your neighbors for the 2012 Bike to Work Day Press Event. Ride in one of the commuter convoys from every district in San Francisco or come to City Hall at 8:30am for this yearly milestone. Celebrate recent improvements to biking in San Francisco, the 71% increase in the number of people biking in San Francisco in the last 5 years, and hear about how the city plans on making 2012 the best year yet for biking. See sfbike.org/btwd for more information. Complimentary Bicycle Valet Parking Provided.