New York City Marathon (ING (ING Group) New York City Marathon for sponsorship (Sponsor (commercial)) reasons) is a major annual marathon (Marathon (sport)) (convert42.195kmmiabbr=onlk=off) whose course runs through all five boroughs of New York City. It is one of the largest marathons in the world, with 43,659 finishers in 2009. 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.

The race is organized by New York Road Runners (NYRR) and has been run every year since 1970. The next marathon will be run on November 7, 2010. In recent years, it has been sponsored by the financial group ING (ING Group). It is held on the first Sunday of November and attracts professional competitors and amateurs from all over the world. Because of the popularity of the race, participation is limited to 37,000 entrants chosen largely by a lottery system. Runners who are members of NYRR can gain entry by meeting the qualifications for guaranteed entry or via nomination from an official running club. Officially recognized running clubs are allowed two guaranteed spots for members who did not make it in via lottery.