| Phoenixville to Smolyan | 4,902.29 mi (7,889.47 km) |
| Phoenixville to Sofia | 4,799.89 mi (7,724.68 km) |
| Phoenixville to Sopot | 4,859.86 mi (7,821.19 km) |
| Phoenixville to Sozopol | 4,988.44 mi (8,028.11 km) |
| Phoenixville to Sredets | 4,971.32 mi (8,000.57 km) |
| Phoenixville to Stamboliyski | 4,872.51 mi (7,841.55 km) |
| Phoenixville to Stara Zagora | 4,905.39 mi (7,894.47 km) |
| Phoenixville to Svilengrad | 4,955.88 mi (7,975.72 km) |
| Phoenixville to Svishtov | 4,843.83 mi (7,795.38 km) |
| Phoenixville to Targovishte | 4,908.37 mi (7,899.26 km) |
| Phoenixville to Teteven | 4,829.20 mi (7,771.84 km) |
| Phoenixville to Troyan | 4,848.82 mi (7,803.42 km) |
| Phoenixville to Tryavna | 4,881.14 mi (7,855.43 km) |
| Phoenixville to Tutrakan | 4,875.91 mi (7,847.02 km) |
| Phoenixville to Varna | 4,962.59 mi (7,986.51 km) |
