This non-profit organization isone of the oldest athletic clubs in the U.S. and iswell-known for organizing the world-famous annual Boston Marathon. With the help of local sponsors like John Hancock Financial Services, theBoston Athletic Association (BAA)provides community programming for the city of Boston. It teams up with area schools and other non-profits to encourage public fitness and promote healthy lifestyles.Other BAA events include the Boston Half-Marathon, the Jimmy Fund Walk and the annual Mayor's Cup Race.