| Louisville to Karlovo | 5,354.48 mi (8,617.20 km) |
| Louisville to Karnobat | 5,437.61 mi (8,750.99 km) |
| Louisville to Kavarna | 5,450.38 mi (8,771.54 km) |
| Louisville to Kazanlak | 5,378.38 mi (8,655.66 km) |
| Louisville to Knezha | 5,288.18 mi (8,510.50 km) |
| Louisville to Kostinbrod | 5,285.36 mi (8,505.97 km) |
| Louisville to Kozloduy | 5,262.17 mi (8,468.64 km) |
| Louisville to Kyustendil | 5,288.24 mi (8,510.60 km) |
| Louisville to Levski | 5,334.09 mi (8,584.39 km) |
| Louisville to Lom | 5,241.36 mi (8,435.16 km) |
| Louisville to Lovech | 5,328.80 mi (8,575.87 km) |
| Louisville to Lukovit | 5,304.83 mi (8,537.29 km) |
| Louisville to Lyaskovets | 5,368.32 mi (8,639.48 km) |
| Louisville to Mezdra | 5,289.17 mi (8,512.09 km) |
| Louisville to Momchilgrad | 5,428.57 mi (8,736.44 km) |
