Celebrate everything bicycle with fellow enthusiasts this Saturday at the San Francisco Bike Expo. The event starts at 10am at the Cow Palace and offers something for everyone, from track lovers to low riders and cyclocross. Events include a bicycle fashion show, a custom and vintage bike show ($25 entry), a trackstand competition (registration begins at 10am, first heat at 4:45p), and even an indoor cyclocross race (registration begins at 9a, first heat at 10). Even if you don't plan to participate, it will be a great place to be a spectator!