NYPD officers stand guard at Times Square early in the morning before the start of the 2016 New York City Marathon in the Manhattan borough of New York City, U.S., November 6, 2016. (Photo by Eduardo Munoz/Reuters)





Runners walk around Times Square early in the morning before the start of the 2016 New York City Marathon in the Manhattan borough of New York City, U.S., November 6, 2016. (Photo by Eduardo Munoz/Reuters)





NYPD officers watch as runners arrive to compete for the 2016 New York City Marathon in the Manhattan borough of New York City, U.S., November 6, 2016. (Photo by Brendan McDermid/Reuters)





NYPD officers check runners as they arrive to compete in the 2016 New York City Marathon in the Manhattan borough of New York City, U.S., November 6, 2016. (Photo by Brendan McDermid/Reuters)





NYPD officers stand guard as runners arrive to compete in the 2016 New York City Marathon in the Manhattan borough of New York City, U.S., November 6, 2016. (Photo by Eduardo Munoz/Reuters)





NYPD officers stand guard as runners arrive to compete in the 2016 New York City Marathon in the Manhattan borough of New York City, U.S., November 6, 2016. (Photo by Eduardo Munoz/Reuters)





Runners sleep before competing in the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Eduardo Munoz/Reuters)





Runners sleep before competing in the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Eduardo Munoz/Reuters)





Women compete in the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Eduardo Munoz/Reuters)





Men compete during the 2016 New York City Marathon in the Manhattan borough of New York City, U.S., November 6, 2016. (Photo by Eduardo Munoz/Reuters)





Runners cross the Verrazano–Narrows Bridge during the 2016 New York City Marathon in the Manhattan borough of New York City, U.S., November 6, 2016. (Photo by Brendan McDermid/Reuters)





A participant taking part in the men's wheelchair division crosses the Verrazano–Narrows Bridge during the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Brendan McDermid/Reuters)





The men's leading pack run during the 2016 New York City Marathon in the Brooklyn borough of New York City, U.S., November 6, 2016. (Photo by Eduardo Munoz/Reuters)





Men leading pack during the 2016 New York City Marathon in the Brooklyn borough of New York City, U.S., November 6, 2016. (Photo by Eduardo Munoz/Reuters)





Runners cross the Verrazano–Narrows Bridge during the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Brendan McDermid/Reuters)





Elite women's runners cross the Verrazano–Narrows Bridge during the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Brendan McDermid/Reuters)





Ghirmay Ghebreslassie (C) of Eritrea leads the men's pack during the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Eduardo Munoz/Reuters)





A runner stops to take a photo on the Verrazano–Narrows Bridge during the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Brendan McDermid/Reuters)





Ghirmay Ghebreslassie (C) of Eritrea leads the men's pack during the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Eduardo Munoz/Reuters)





Ghirmay Ghebreslassie (C) of Eritrea leads the men's pack during the 2016 New York City Marathon in the Bronx borough of New York City, New York, NY, U.S. November 6, 2016. (Photo by Eduardo Munoz/Reuters)





Ghirmay Ghebreslassie (L) of Eritrea leads the men's pack next to Hosea Rotich of Kenya and Lelisa Desisa of Ethiopia as they cross the Ed Koch Queensboro Bridge during the 2016 New York City Marathon in the Queens borough of New York City, NY, U.S. November 6, 2016. (Photo by Eduardo Munoz/Reuters)





Runners cross the Verrazano–Narrows Bridge during the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Brendan McDermid/Reuters)





Runners cross the Verrazano–Narrows Bridge during the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Brendan McDermid/Reuters)





Elite men's runners compete in the 2016 New York City Marathon in the Brooklyn borough of New York City, New York, U.S. November 6, 2016. (Photo by Eduardo Munoz/Reuters)





Runners cross the Verrazano–Narrows Bridge during the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Brendan McDermid/Reuters)





Manhattan is seen in the distance as runners cross the Verrazano–Narrows Bridge during the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Brendan McDermid/Reuters)





Runners cross the Verrazano–Narrows Bridge during the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Brendan McDermid/Reuters)





Runners cross the Verrazano–Narrows Bridge during the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Brendan McDermid/Reuters)





Runners cross the Verrazano–Narrows Bridge during the 2016 New York City Marathon in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Brendan McDermid/Reuters)





Marcel Hug of Switzerland celebrates after winning the mens wheelchair division of the 2016 New York City Marathon in Central Park in the Manhattan borough of New York City, New York, U.S. November 6, 2016. (Photo by Mike Segar/Reuters)





Tatyana McFadden of the U.S. crosses the finish line to win the womens wheelchair division of the 2016 New York City Marathon in Central Park in the Manhattan borough of New York City, New York, U.S. November 6, 2016. (Photo by Mike Segar/Reuters)





Winner Tatyana McFadden of the U.S. (R) holds hands with second place finisher Manuela Schar of Switzerland after the finish of the women's wheelchair division of the 2016 New York City Marathon in Central Park in the Manhattan borough of New York City, U.S., November 6, 2016. (Photo by Mike Segar/Reuters)





Winner Mary Keitany of Kenya (R), 2nd place finisher Sally Kipyego of Kenya (L) and third place finisher Molly Huddle of the U.S. stand at the finish line after the 2016 New York City Marathon in Central Park in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Mike Segar/Reuters)





Winner Ghirmay Ghebreslassie of Eritrea (C), 2nd place finisher Lucas Rotich of Kenya (L) and third place finisher Abdi Abdirahman of the U.S. (R) pose together at the finish line of the 2016 New York City Marathon in Central Park in the Manhattan borough of New York City, NY, U.S. November 6, 2016. (Photo by Mike Segar/Reuters)