The
Great Lakes Seaway Trail, formerly named and commonly known as the
Seaway Trail, is a
National Scenic Byway in the northeastern United States, mostly contained in
New York but with a small segment in
Pennsylvania. The trail consists of a series of designated roads and highways that travel along the
Saint Lawrence Seaway—specifically,
Lake Erie, the
Niagara River,
Lake Ontario, and the
Saint Lawrence River. It begins at the
Ohio state line in rural
Erie County, Pennsylvania, and travels through several cities and villages (including the cities of
Buffalo,
Niagara Falls,
Rochester,
Oswego, and
Ogdensburg) before ending at the
Seaway International Bridge northeast of the
village of Massena in
St. Lawrence County, New York. It is maintained by the non-profit Seaway Trail, Inc.