Ohio State Route 668

State Route 668 (SR 668) is a state highway in central Ohio. The route is 29.24 miles (47.06 km) long and is signed north–south. Its southern terminus is at an intersection with SR 93 in the Wayne National Forest, northeast of Logan. The northern terminus is at an intersection with US 40 in the unincorporated community of Brownsville.

Ohio State Route 668

State Route 668 (SR 668) is a state highway in central Ohio. The route is 29.24 miles (47.06 km) long and is signed north–south. Its southern terminus is at an intersection with SR 93 in the Wayne National Forest, northeast of Logan. The northern terminus is at an intersection with US 40 in the unincorporated community of Brownsville.