Bicycle Club of Philadelphia
Less injury-inducing than touch football and less awkward than dodgeball with co-workers is this band of 1,200 cyclists who offer camaraderie, a perfect way to blow off some steam after a long workday, and the chance to explore unknown corners of the city and 'burbs. Group rides are organized by skill level, and the membership fee is only $15 a year. All you have to do is show up with your bike and a helmet. Ride on.