BOSTON (AP) -- Running shorts have pretty deep pockets - at least when it comes to the Boston Marathon and other big-city races.
Organizers of this month's 121st running of America's most venerable footrace say it'll pump $192.2 million into the local economy.
That's the equivalent of $311 for every man, woman and child living in the city of Boston.
Sports industry experts say Boston's experience is part of a lucrative global trend playing out in Chicago, New York, London and other cities that stage major marathons.
Running USA, a nonprofit group that promotes the sport, says marathon runners tend to be affluent.
Surveys show that seven in 10 competitors earn $75,000 or more a year, and most are college graduates.
This year's Boston Marathon is Monday, April 17.
