The Haverstraw-Ossining Ferry is now running on the weekends through the summer, which means that you can now explore a complete hiking/cycling loop via the Old Croton Aqueduct, The Haverstraw-Ossining Ferry, Haverstraw-Nyack Beach State Park, and the Mario Cuomo Bridge.
Download Metro-North schedules for timing on Hudson Line trains between Ossining and Tarrytown HERE
Download weekend ferry schedule HERE