London will reportedly be Radcliffe's final marathon of her career.
The Kenyan broke the world mark at the Berlin Marathon last year.
The pair won the 2013 edition of the race through the city’s five boroughs.
The reigning London and New York City Marathon champion headlines a power-packed lineup.
The Kenyan tandem has been making many public appearances in the wake of their victory on Sunday.
Ethiopian Buzunesh Deba is runner-up for the second time in a row.
A slew of sub-2:30 women have come from far and wide to race in New York on Sunday.
The 35-year-old suffered a broken toe during a training run over the summer.
Priscah Jeptoo and Tsegaye Kebede are the newly crowned champions.
The Kenyan is now in first place for the 2012-2013 series.