O'Sullivan will join Kenyans Lornah Kiplagat and Susan Chepkemei and American Marla Runyan in one of strongest women's elite fields in the history of the 32-year-old race.

BBC: O'Sullivan to run NY Marathon

Five athletes - all in summer sports - have competed in the Paralympics and Olympics - South African swimmer Natalie du Toit, American runner Marla Runyan, Polish table tennis player Natalia Partyka, Italian archer Paola Fantato and New Zealand archer Neroli Fairhall.

BBC: Blind skier Brian McKeever makes Olympic history