Its southern terminus is at the U.S. Route 36/State Route 3 concurrency in Sunbury, and its northern terminus is at U.S. Route 6 east of Huron, at the southernmost point of Lake Erie (which is subsequently the southernmost northern border of the United States).
The route's southern extremity is at the intersection of U.S. Route 36/State Route 3 in Sunbury, and its northern extremity is on U.S. Route 6 east of Huron, near the southernmost point of Lake Erie (which is also the southernmost northern border of the United States).