| State: | KY |
| Type: | KY |
| Route: | 251 |
| Map Custom: | yes |
| Map Notes: | KY 251 highlighted in red |
| Length Mi1: | 7.981 |
| Direction A1: | South |
| Terminus A1: | in Elizabethtown |
| Junction1: | south of Fort Knox |
| Direction B1: | North |
| Terminus B1: | in Fort Knox |
| Length Mi2: | 3.058 |
| Direction A2: | West |
| Terminus A2: | Fort Knox |
| Direction B2: | East |
| Counties: | Hardin, Bullitt |
| Previous Type: | KY |
| Previous Route: | 250 |
| Next Type: | KY |
| Next Route: | 252 |
Kentucky Route 251 (KY 251) is an 11adj=midNaNadj=mid state highway in the U.S. state of Kentucky, split into two sections. The highway connects Elizabethtown and Fort Knox with rural areas of Hardin County; the second section, separated from the first by Fort Knox, is near Belmont in Bullitt County.
KY 251 has two sections. The Hardin County section, a state secondary highway, extends 7.981miles from U.S. Route 31W (US 31W) in Elizabethtown north to KY 313 on the southern edge of Fort Knox.[1] The 3.058adj=midNaNadj=mid Bullitt County segment is a rural secondary highway that runs from a dead end on the eastern edge of Fort Knox east to KY 61 at Belmont.[2]
The Hardin County portion of KY 251 begins at an intersection with U.S. Route 31W (West Dixie Avenue) in Elizabethtown. It travels to the northeast and curves to the north-northeast. It passes Elizabethtown High School, St. James Cemetery, Elizabethtown City Park, and Hardin Memorial Park cemetery. Just before leaving the city limits of the city, it intersects KY 3005 (Ring Road). It curves to the north-northwest and intersects KY 434 (Battle Training Road). Just north of this intersection, the highway enters the boundaries of Fort Knox. It curves to the north-northeast and meets its northern terminus, an intersection with KY 313 (Joe Prather Highway). Here, the roadway continues as Shepherdsville Road, a restricted access road for the fort.[3]
The western terminus of this portion of KY 251 is at the eastern edge of Fort Knox. The road then travels east and northeast through the southern edge of the community of Belmont before reaching its eastern terminus at KY 61.[4]