The length of the route is 3.46 miles (5.57 km) and it is located entirely in Hancock County.

SR 185 is the main route into the center of Sorrento.

At this point, SR 185 turns due north along Sorrent Avenue and parallels Back Cove for about 0.4 miles (0.64 km).

At West Shore Road, SR 185 heads east along East Side Road to cut across the Waukeag Neck peninsula to later parallel the shore of Flanders Bay.

Shortly after the northernmost intersection with West Shore Road, SR 185 ends at US 1 just past the Sorrento–Sullivan town line.