Its northern terminus is at a T-intersection with U.S. Route 62 (US 62) one mile (1.6 km) southwest of the hamlet of Winesburg.

At the Walnut Creek Township Highway 444 intersection, SR 515 turns north and enters into rural territory.

SR 515 abuts the east side of a forest prior to passing through a northeasterly S-curve, and re-entering a landscape of farmland as it intersects County Road 172 and Township Highway 410 successively.

After a few twists and turns, SR 515 descends the hill into a little valley and passes through the tiny village of Trail.

[3] Transitioning back into farmland, SR 515 next passes Township Road 414, and amid a blend of homes, farms and woods, curves to the northwest and then back to the northeast prior to coming to an end at its junction with US 62 at a T-intersection in Paint Township approximately one mile (1.6 km) southwest of the community of Winesburg.