Ohio State Route 118 (SR 118) is a 55.30-mile (89.00 km) long north–south state highway in western Ohio, connecting the cities of Greenville and Van Wert. SR 118 runs northward through Darke, Mercer and Van Wert counties, starting from a roundabout with SR 49, SR 571, SR 121 and SR 502 in Greenville. The route crosses through the farming villages of Ansonia, St. Henry, Rossburg and Ohio City as well as the villages of Coldwater and Rockford. Just north of Rossburg, SR 118 serves Eldora Speedway, a clay oval racetrack owned by NASCAR driver Tony Stewart. The northern terminus of SR 118 is at a junction with U.S. Route 127 in the city of Van Wert.

State Route 49 is a state highway in the western part of the U.S. state of Ohio. It begins in Drexel, an area within the city of Trotwood, at US 35 and runs northwesterly to Greenville, and then runs roughly along near the western edge of the state near the Indiana state line to the Michigan state line where it meets with Michigan's M-49.