| Front Royal to Smolyan | 5,064.92 mi (8,151.20 km) |
| Front Royal to Sofia | 4,962.38 mi (7,986.19 km) |
| Front Royal to Sopot | 5,022.05 mi (8,082.21 km) |
| Front Royal to Sozopol | 5,149.98 mi (8,288.09 km) |
| Front Royal to Sredets | 5,133.03 mi (8,260.82 km) |
| Front Royal to Stamboliyski | 5,034.96 mi (8,102.99 km) |
| Front Royal to Stara Zagora | 5,067.46 mi (8,155.29 km) |
| Front Royal to Svilengrad | 5,118.09 mi (8,236.77 km) |
| Front Royal to Svishtov | 5,005.44 mi (8,055.47 km) |
| Front Royal to Targovishte | 5,069.83 mi (8,159.11 km) |
| Front Royal to Teteven | 4,991.39 mi (8,032.86 km) |
| Front Royal to Troyan | 5,010.92 mi (8,064.30 km) |
| Front Royal to Tryavna | 5,043.05 mi (8,116.01 km) |
| Front Royal to Tutrakan | 5,036.97 mi (8,106.22 km) |
| Front Royal to Varna | 5,123.69 mi (8,245.79 km) |
