Kentucky Route 8 is a 114.202-mile-long (183.790 km) east–west state highway divided into two distinct segments across northern Kentucky. The western terminus of the route is at KY 237 near Francisville. The eastern terminus is at U.S. Route 23 in South Portsmouth. The two distinct segments of this route were not meant to be connected together. KY 8 from its west end in Boone County to Augusta in Bracken County is designated as a part of an identified corridor for bikes named the Ramblin' River Tour by the American Association of State Highway and Transportation Officials (AASHTO).