The highway's northern terminus is at another T-intersection, this time with the SR 94/SR 303 concurrency nearly 3.25 miles (5.23 km) west of Richfield.

SR 606, which was established in the late 1930s, is a two-lane route located in the northeastern Medina County township of Hinckley.

The highway immediately crosses into Hinckley Township as it departs to the northeast from the SR 3 intersection.

The area the route travels through is now more heavily wooded than previously, but a number of homes continue to dot the landscape.

The SR 606 designation was applied to the same stretch of highway through northeastern Medina County that it utilizes to this day.