New York City Marathon New York City Marathon

A runner moves past a group of police officers gathered near the finish line of the New York City Marathon on Nov. 6, 2016. Authorities are increasing the number of officers and other law enforcement personnel for this year's race, in the wake of Tuesday's terrorist attack in the city, in which a truck struck and killed eight bicyclists. Seth Wenig/AP hide caption

toggle caption
Seth Wenig/AP

Workers construct the Finish Line on Friday as preparations continue for the 43rd New York City Marathon. Timothy Clary /AFP/Getty Images hide caption

toggle caption
Timothy Clary /AFP/Getty Images