| Loudoun Valley Estates to Karlovo | 4,994.87 mi (8,038.47 km) |
| Loudoun Valley Estates to Karnobat | 5,082.80 mi (8,179.98 km) |
| Loudoun Valley Estates to Kavarna | 5,101.63 mi (8,210.28 km) |
| Loudoun Valley Estates to Kazanlak | 5,019.97 mi (8,078.86 km) |
| Loudoun Valley Estates to Knezha | 4,930.16 mi (7,934.33 km) |
| Loudoun Valley Estates to Kostinbrod | 4,922.99 mi (7,922.78 km) |
| Loudoun Valley Estates to Kozloduy | 4,904.46 mi (7,892.97 km) |
| Loudoun Valley Estates to Kyustendil | 4,922.82 mi (7,922.51 km) |
| Loudoun Valley Estates to Levski | 4,977.85 mi (8,011.08 km) |
| Loudoun Valley Estates to Lom | 4,882.76 mi (7,858.05 km) |
| Loudoun Valley Estates to Lovech | 4,970.79 mi (7,999.72 km) |
| Loudoun Valley Estates to Lukovit | 4,945.88 mi (7,959.62 km) |
| Loudoun Valley Estates to Lyaskovets | 5,012.38 mi (8,066.65 km) |
| Loudoun Valley Estates to Mezdra | 4,929.03 mi (7,932.51 km) |
| Loudoun Valley Estates to Momchilgrad | 5,066.31 mi (8,153.44 km) |
