Security is heightened after the bombings at this year's Boston Marathon. Barricades are set up around Central Park, where the 26.2-mile race ends.
Kenya's Geoffrey Mutai is the defending men's champ after winning in 2011. Ethiopia's Firehiwot Dado is the reigning women's champ.
More than 47,000 runners are expected to start the race through the five boroughs.
(For more sports news and updates, follow Ahram Online Sports on Twitter at @AO_Sports and on Facebook at AhramOnlineSports.)