Croton–Harmon is a train station in Croton-on-Hudson, New York. It serves the Metro-North Railroad's Hudson Line and several Amtrak lines. It is the main transfer point between the Hudson Line's local and express service, marks the endpoint of third rail electrification on the route, and it is also served by almost all Amtrak trains on the line. Metro-North trains leave for New York City about every 30 minutes. It is 32.5 miles from Grand Central Terminal.