| McAllen to Smolyan | 6,502.22 mi (10,464.32 km) |
| McAllen to Sofia | 6,398.73 mi (10,297.77 km) |
| McAllen to Sopot | 6,455.76 mi (10,389.54 km) |
| McAllen to Sozopol | 6,577.96 mi (10,586.20 km) |
| McAllen to Sredets | 6,562.44 mi (10,561.22 km) |
| McAllen to Stamboliyski | 6,470.84 mi (10,413.80 km) |
| McAllen to Stara Zagora | 6,500.03 mi (10,460.79 km) |
| McAllen to Svilengrad | 6,551.77 mi (10,544.06 km) |
| McAllen to Svishtov | 6,434.38 mi (10,355.14 km) |
| McAllen to Targovishte | 6,497.32 mi (10,456.43 km) |
| McAllen to Teteven | 6,425.17 mi (10,340.32 km) |
| McAllen to Troyan | 6,443.90 mi (10,370.45 km) |
| McAllen to Tryavna | 6,474.42 mi (10,419.57 km) |
| McAllen to Tutrakan | 6,461.24 mi (10,398.37 km) |
| McAllen to Varna | 6,548.06 mi (10,538.08 km) |
