| West Mifflin to Smolyan | 5,069.96 mi (8,159.31 km) |
| West Mifflin to Sofia | 4,966.81 mi (7,993.31 km) |
| West Mifflin to Sopot | 5,024.98 mi (8,086.92 km) |
| West Mifflin to Sozopol | 5,149.98 mi (8,288.09 km) |
| West Mifflin to Sredets | 5,133.74 mi (8,261.95 km) |
| West Mifflin to Stamboliyski | 5,039.14 mi (8,109.71 km) |
| West Mifflin to Stara Zagora | 5,069.79 mi (8,159.03 km) |
| West Mifflin to Svilengrad | 5,121.05 mi (8,241.54 km) |
| West Mifflin to Svishtov | 5,005.83 mi (8,056.10 km) |
| West Mifflin to Targovishte | 5,069.54 mi (8,158.64 km) |
| West Mifflin to Teteven | 4,994.34 mi (8,037.62 km) |
| West Mifflin to Troyan | 5,013.44 mi (8,068.35 km) |
| West Mifflin to Tryavna | 5,044.72 mi (8,118.69 km) |
| West Mifflin to Tutrakan | 5,035.12 mi (8,103.24 km) |
| West Mifflin to Varna | 5,121.95 mi (8,242.97 km) |
