State Route 78 (SR 78) is a state highway that runs for 105 miles (169 km) from Nelsonville to Clarington in the U.S. state of Ohio. Car and Driver has called it one of the most scenic highways nationwide.
State Route 78 (SR 78), which covers a distance of 105 miles (169 km) between Nelsonville and Clarington, Ohio, is praised by Car and Driver as one of the most visually appealing highways in the country.