In order from west to east in Kentucky, and south to north in Ohio, these special routes are listed from the beginning of U.S. Route 68 (US 68) to the end.

is a 2.14-mile-long (3.44 km) alternate route in Fairview, Kentucky.

It travels through the community south of the main four-lane US 68 corridor.

This highway is in east-central Christian and west-central Todd counties.

It runs through downtown Russellville while US 68 bypasses the town to the north.

The entire route is in Bowling Green, Warren County.

It runs concurrent with Kentucky Route 80 for its entire length.

The entire route is in Glasgow, Barren County.

The entire route is in Paris, Bourbon County.

It ran through Aberdeen and intersected with State Route 41.

The entire route is in Maysville, Mason County.