For those that don't know, Bay to Breakers is an annual SF tradition.  It's known to some as a 12K race and to many others a great excuse to walk/boogie with a costumed mob.

Yesterday the streets were filled with costumed participants and outrageous floats jumping to the beat of street DJs and solo musicians.  We've captured a bit of the fun along Oak St. and the SF Panhandle to Golden Gate Park in Skimble fluorescent style:

More B2B photos can be found on Maria's flickrstream.

As if that wasn't enough to get you psyched to be active, here's Sabreena Tanner of Urban Tool after she recently completed her first marathon, the Vienna Marathon: