| Loudoun Valley Estates to Smolyan | 5,034.82 mi (8,102.76 km) |
| Loudoun Valley Estates to Sofia | 4,932.39 mi (7,937.92 km) |
| Loudoun Valley Estates to Sopot | 4,992.28 mi (8,034.31 km) |
| Loudoun Valley Estates to Sozopol | 5,120.67 mi (8,240.93 km) |
| Loudoun Valley Estates to Sredets | 5,103.61 mi (8,213.47 km) |
| Loudoun Valley Estates to Stamboliyski | 5,005.00 mi (8,054.77 km) |
| Loudoun Valley Estates to Stara Zagora | 5,037.79 mi (8,107.53 km) |
| Loudoun Valley Estates to Svilengrad | 5,088.31 mi (8,188.85 km) |
| Loudoun Valley Estates to Svishtov | 4,976.08 mi (8,008.23 km) |
| Loudoun Valley Estates to Targovishte | 5,040.58 mi (8,112.03 km) |
| Loudoun Valley Estates to Teteven | 4,961.62 mi (7,984.96 km) |
| Loudoun Valley Estates to Troyan | 4,981.22 mi (8,016.50 km) |
| Loudoun Valley Estates to Tryavna | 5,013.49 mi (8,068.43 km) |
| Loudoun Valley Estates to Tutrakan | 5,007.98 mi (8,059.57 km) |
| Loudoun Valley Estates to Varna | 5,094.68 mi (8,199.09 km) |
