The western terminus of State Route 697 is located at its junction with State Route 116 approximately 2 miles (3.2 km) southwest of Middle Point.

The eastern terminus of this route is located on the northern fringe of downtown Delphos, following a nearly 0.25 miles (0.40 km) concurrency with State Route 66 at a signalized intersection that doubles as the southern terminus of State Route 190.

This state highway runs through the eastern portion of Van Wert County, and into the extreme northwestern corner of Allen County.

State Route 697 is not a part of the National Highway System.

No changes of major significance have taken place to the highway throughout its history.