| New Carrollton to Smolyan | 5,009.47 mi (8,061.97 km) |
| New Carrollton to Sofia | 4,907.16 mi (7,897.31 km) |
| New Carrollton to Sopot | 4,967.29 mi (7,994.09 km) |
| New Carrollton to Sozopol | 5,096.16 mi (8,201.48 km) |
| New Carrollton to Sredets | 5,078.98 mi (8,173.83 km) |
| New Carrollton to Stamboliyski | 4,979.80 mi (8,014.22 km) |
| New Carrollton to Stara Zagora | 5,012.89 mi (8,067.47 km) |
| New Carrollton to Svilengrad | 5,063.30 mi (8,148.60 km) |
| New Carrollton to Svishtov | 4,951.53 mi (7,968.71 km) |
| New Carrollton to Targovishte | 5,016.13 mi (8,072.69 km) |
| New Carrollton to Teteven | 4,936.63 mi (7,944.74 km) |
| New Carrollton to Troyan | 4,956.30 mi (7,976.40 km) |
| New Carrollton to Tryavna | 4,988.71 mi (8,028.55 km) |
| New Carrollton to Tutrakan | 4,983.81 mi (8,020.67 km) |
| New Carrollton to Varna | 5,070.47 mi (8,160.14 km) |
