| McKeesport to Smolyan | 5,068.18 mi (8,156.45 km) |
| McKeesport to Sofia | 4,965.04 mi (7,990.46 km) |
| McKeesport to Sopot | 5,023.25 mi (8,084.13 km) |
| McKeesport to Sozopol | 5,148.32 mi (8,285.42 km) |
| McKeesport to Sredets | 5,132.05 mi (8,259.24 km) |
| McKeesport to Stamboliyski | 5,037.38 mi (8,106.87 km) |
| McKeesport to Stara Zagora | 5,068.07 mi (8,156.27 km) |
| McKeesport to Svilengrad | 5,119.32 mi (8,238.75 km) |
| McKeesport to Svishtov | 5,004.15 mi (8,053.41 km) |
| McKeesport to Targovishte | 5,067.88 mi (8,155.97 km) |
| McKeesport to Teteven | 4,992.61 mi (8,034.83 km) |
| McKeesport to Troyan | 5,011.71 mi (8,065.57 km) |
| McKeesport to Tryavna | 5,043.02 mi (8,115.95 km) |
| McKeesport to Tutrakan | 5,033.50 mi (8,100.63 km) |
| McKeesport to Varna | 5,120.32 mi (8,240.36 km) |
