In Chicago, a PedalPub loaded up with riders. Joe Barrett/The
Wall Street Journal  CHICAGO—Karen Kelly thought she had
everything she needed for a recent bachelorette-party weekend
here: a wad of cash, a dress for evening, makeup and hairspray.
But about an hour into the first activity, the 30-year-old
merchandising assistant realized she'd made the wrong shoe
choice.  The pub crawl is getting a modern exercise-conscious
update. WSJ's Joe Barrett reports on the rise of pedal pubs, a
roving structure that lets as many as 16 people bike together
between pubs.  "You're going really fast and your flip-flop just
shoots off," she said, after twice running down the street to
retrieve one.  Ms. Kelly and her friends were taking a spin on a
giant, four-wheeled bike with a fake beer-barrel on the front
and room for 16 passengers. Variously known as a PedalPub, Party
Bike or a Bar Hopper, the slow-moving behemoths are powered by
10 pedalers, who sit on stools on either side of a long, wooden
bar. Most of the bikes in t