From EBBC:
December's East Bay Bike Party theme: Bad Santa/Ugly Sweater
The ride will be starting at two different BART stations. Join the one that’s closest to you, meet up at Frank Ogawa Plaza, then ride to the final destination together.
The afterparty is going to be HUGE. There will be beer on tap (5$ donation), street vendors, a performance by theDerailleurs, karaoke, and of course, dancing.
Routes and final party location will be posted the week of the ride.
You can RSVP on Facebook.