Kentucky Route 420
| KY 420 highlighted in red | ||||
| Route information | ||||
| Maintained by KYTC | ||||
| Length | 5.120 mi (8.240 km) | |||
| Major junctions | ||||
| South end | US 127 south of Frankfort | |||
| North end | US 127 in Frankfort | |||
| Location | ||||
| Country | United States | |||
| State | Kentucky | |||
| Counties | Franklin | |||
| Highway system | ||||
| 
 | ||||
| 
 | ||||
Kentucky Route 420 (KY 420) is a 5.1-mile-long (8.2 km) state highway in the U.S. state of Kentucky. The highway connects southern parts of Franklin County with Frankfort.