| College Park to Smolyan | 5,010.45 mi (8,063.53 km) |
| College Park to Sofia | 4,908.12 mi (7,898.85 km) |
| College Park to Sopot | 4,968.21 mi (7,995.56 km) |
| College Park to Sozopol | 5,097.01 mi (8,202.84 km) |
| College Park to Sredets | 5,079.84 mi (8,175.22 km) |
| College Park to Stamboliyski | 4,980.75 mi (8,015.75 km) |
| College Park to Stara Zagora | 5,013.79 mi (8,068.92 km) |
| College Park to Svilengrad | 5,064.22 mi (8,150.08 km) |
| College Park to Svishtov | 4,952.38 mi (7,970.08 km) |
| College Park to Targovishte | 5,016.97 mi (8,074.03 km) |
| College Park to Teteven | 4,937.55 mi (7,946.22 km) |
| College Park to Troyan | 4,957.21 mi (7,977.86 km) |
| College Park to Tryavna | 4,989.59 mi (8,029.97 km) |
| College Park to Tutrakan | 4,984.60 mi (8,021.94 km) |
| College Park to Varna | 5,071.27 mi (8,161.42 km) |
