The Harlem Valley Rail Trail is a paved rail trail on an abandoned portion of the New York and Harlem Railroad, north of the Metro-North RailroadHarlem Line terminus in Wassaic. It is owned by the New York State Office of Parks, Recreation and Historic Preservation (OPRHP). It is maintained through an agreement between OPRHP, Dutchess County and the Harlem Valley Rail Trail Association.
The abandoned rail line was converted into a public park in 1989. The rail trail opened in 1996, and was expanded in 1997, 2000 and 2005. It is planned to be expanded northward (beyond the current terminus in Taconic State Park) to Chatham, which would make the total length of the rail trail approximately 46 miles (74 km).