Keitany, 36, dominated the 42.2-kilometer (26.22 miles) race on Sunday to earn her fourth gold medal with a time of 2:22:48, the second-best women's time in the history of the race.
She crossed the finish line 3 minutes and 13 seconds ahead of fellow Kenyan Vivian Cheruiyot, 35, who recorded a time of 2:26:02 and was 20 seconds in front of defending champion Shalane Flanagan, reports Efe news.
The 37-year-old Flanagan moved up from fifth place in the final kilometers until she managed to make it into the third spot, the fast American in the race with a time of 2:26:22.
In the men's competition, Ethiopia's Lelisa Desis, 28, won the race for the first time with a time of 2:05:59, the second-best time ever recorded for the men's side of the New York Marathon.
It was a tight final, with 22-year-old Shura Kitata, also from Ethiopia, coming in just 2 seconds back, and with favourite and title defender Geoffrey Kamworor, a 25-year-old Kenyan, crossing the finish line 26 seconds afterwards.
In the wheelchair competition, Switzerland's Manuela Schar won her second consecutive race for the women with a time of 1:50:27, while US athlete Daniel Romanchuk also won his second Marathon, defeating 2017 champ Marcel Hug with a time of 1:36:21.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)