Race officials rescheduling pre-race events , working to accommodate participants . five international runners could be affected by flight cancellations or delays . The 26.2-mile course winds across Manhattan Up to 20,000 boroughs . New York ( CNN ) -- Runners unable to reach New York 's in time for the race will be entered in Sunday marathon .
Race officials rescheduling pre-race events , working to accommodate participants . five international runners could be affected by flight cancellations or delays . The 26.2-mile course winds across Manhattan Up to 20,000 boroughs . Runners unable to reach New York 's in time for the race will be entered in Sunday marathon .