By Amy Tennery NEW YORK (Reuters) -Olympic champion Peres Jepchirchir won the 50th running of the New York City Marathon on Sunday, surviving a thrilling three-way battle before sprinting for the finish line, and fellow Kenyan Albert Korir won the men’s race. Jepchirchir is the first athlete to pick up Olympic gold and win the famed five-borough race in the same year as she crossed the finishing line in two hours, 22 minutes and 39 seconds, with compatriot Viola Cheptoo and Ethiopian Ababel Yeshaneh finishing second and third respectively. “After I won Olympic marathon I was not expecting to w…