State Route 703 (SR 703) is a state highway in western Ohio. Its western terminus is in Montezuma at SR 219, and its eastern terminus is in St. Marys at an intersection with SR 29, SR 66, and the southern terminus of SR 116 in St. Marys. The route is mainly an east–west highway along the shores of Grand Lake St. Marys, although the section between Celina and Montezuma travels in a more north-south fashion.

State Route 219 is an east–west state highway in the western portion of the U.S. state of Ohio. State Route 219's western terminus is at the Indiana State Line approximately 5.5 miles (8.9 km) northwest of Fort Recovery, with the roadway continuing west into the Hoosier State being County Road 300N. The eastern terminus of State Route 219 is at a diamond interchange with Interstate 75 at its Exit 104 in Botkins.