SR 307 begins at a T-intersection with SR 528. The route heads east as a two-lane highway passing through farmland and woodland, with some houses. The highway has an intersection with
SR 534. The road has an intersection with
SR 45, in
Austinburg. After Austinburg, SR 307 turns towards the southeast, still passing through farmland and woodland. The route enters
Jefferson, passing through residential properties, before an intersection with
SR 46. SR 46 and SR 307 head due south concurrent, into downtown Jefferson, passing through commercial and residential properties. After downtown Jefferson SR 307 leaves SR 46. SR 307 heads southeast leaving Jefferson, passing through woodland and farmland. The highway has an interchange with
SR 11. SR 307 ends at a T-intersection in rural
Ashtabula County. No segment of this highway is a part of the
National Highway System. ==History==