The Lehigh Valley Railroad ran through Trumansburg between 13 September 1873 and October 1962, when the portion south to Ithaca was abandoned and most of the easements sold to the New York Gas & Electric Company (NYSEG). The portion north to Geneva was abandoned in 1967. In the last 15 years the state park system has bought back much of the right-of-way and is in the process of constructing a biking and hiking trail along the portion south to Ithaca. It is called the Black Diamond Trail, after the Lehigh Valley's premier passenger train that ran between New York City and Buffalo along the line (although not stopping in Trumansburg).