Kentucky Route 2158 is a north–south highway in Warren County, Kentucky. It parallels Interstate 65 (I-65) for all of its length. It is known locally as Cumberland Trace.
KY 2158 starts at a junction with U.S. Route 231 (US 231), known locally as Scottsville Road. north of this intersection, KY 2158 has a junction with KY 2629, a west–east route that begins at this point.
KY 2158 then continues north for another before reaching its terminus at KY 234, just east of the exit 26 interchange with I-65.
From its beginning until the intersection with KY 2629, KY 2158 is surrounded primarily by commercial development. North of the intersection, the highway is primarily surrounded by residential development.