if you feel like riding the highway 17 or driving, santa cruz has its CRANK mob on this friday, which is pretty much critical mass but without the prentention and wayyyyy more drunk, debauched, and most of the time, eventually naked in hot tubs. its most of the santa cruz crew, PLUS a bunch of noobs (like, noob to bikes in general, which usually means that they do dumb shit like randomly turning left RIGHTINFRONTOFYOU) BUTTT its tons-o-funs. it starts 9:45 in SCruz, if you are interested.
also, my friend it putting on a race on may 18th in scruz, and the $10 fee includes beer and food. his races are really good, so people should try to make it out. and there is an all girls alleycat on the 17th, but i think if you wear a dress boys can race too.