Shalane Flanagan won the 47th New York City Marathon on Sunday, becoming the first able-bodied American to win the women's event in 40 years.
Two years after losing the lead late in the 42.1km race, Kamworor held off compatriot Wilson Kipsang to win in an unofficial time of 2hrs 10mins 53secs.
Kenya's Mary Keitany, who was chasing her fourth consecutive NY victory, was second with 61 seconds back.
Keitany struggled home in 2:27:54 for second with Ethiopia's Mamitu Daska third in 2:28:08.
On the men's side, Kenyan Geoffrey Kamworor beat out countryman and 2014 victor Wilson Kipsang for his first major marathon victory, with a time of 2 hours, 10 minutes and 53 seconds.
Qualcomm accuses Apple of sharing 'unprecedented access' to chip code with Intel
Apple responded to this, saying that the company had tried to negotiate before suing and that Qualcomm is abusing its position. It widened its suppliers to include Intel for some versions of the iPhone beginning with the 7 model.
Flanagan's win disrupted the marathon dominance of Kenya's Mary Keitany. Flanagan, 36, is the American record holder in the indoor 3,000 meters, the indoor 5,000 and won a bronze medal that was upgraded to silver in the 10,000 in the 2008 Olympics. Kenya's Wilson Kipsang took second place, finishing in 2:10:56, and Lelisa Desisa of Ethiopia, victor of the 2013 and 2015 Boston Marathons, finished third in 2:11:32.
The race was held amid heightened security after a terror attack that killed eight people on a popular bike path in Manhattan last week. Keitany won the last three marathons and was second to Flanagan.
Former victor Meb Keflezighi, who was running his final competitive marathon at age 42, finished 11th in 2:15:29.
In the wheelchair event, the Swiss dominated with Manuela Schar tops among women and Marcel Hug finishing first among the men. He settled for second in 2015 to Kenyan Stanley Biwott after being overtaken late in the race.