The New York City Marathon (ING New York City Marathon for sponsorship reasons) is a major annual marathon (42.195 km) (26.2 miles) whose course runs through all five boroughs of New York City. It is the largest marathon in the world, with 37,850 finishers in 2006.[1] Along with the Boston Marathon and Chicago Marathon, it is among the pre-eminent long-distance annual running events in the United States and is one of the World Marathon Majors.