Tap 'N' Run, St. Louis

It doesn't matter how you complete the 4K course at Tap 'N' Run—just that you have fun doing it. Participants ages 21 and up can walk, run, skip, or cartwheel along the route, stopping at three "chug stations" along the way to down some frosty beer (chugging is optional, and water is always available instead of beer). Costumes are encouraged, too, and the sillier the better. A full beer awaits participants at the finish line, but the fun doesn't stop there. Post-race, organizers dole out prizes at the extracurricular awards ceremony in categories such as "best 'stache," "nastiest belcher," and "most creative team name." All guests receive a finisher's medal that doubles as a bottle opener.