Today is the day-

SAN FRANCISCO—If there's one thing people here seem to agree on, it's that nudity during an athletic event isn't a problem. But the city's tolerance for other forms of debauchery during Bay to Breakers, its annual cross-town footrace, has finally run out.

This Sunday, on the race's 100th anniversary, officials have banned inebriated and unregistered runners, as well as any wheeled objects. Those prohibitions wouldn't be controversial at most road races—but for many participants, Bay to Breakers has little to do with running and a lot to do with finding creative ways to transport alcohol for 7.5 miles.

In recent years, mobile taverns known as floats—including a Viking ship, a tiki hut and a pole-dancing cage—have co-opted the race, allowing costumed revelers as well as runners to dance and drink as they go.

San Francisco Cracks Down on Bay to Breakers Race: Run Naked, Not Drunk - WSJ.com

Should be some interesting photo's to follow.