| Huntsville to Smolyan | 5,606.25 mi (9,022.38 km) |
| Huntsville to Sofia | 5,503.23 mi (8,856.59 km) |
| Huntsville to Sopot | 5,561.71 mi (8,950.71 km) |
| Huntsville to Sozopol | 5,687.14 mi (9,152.56 km) |
| Huntsville to Sredets | 5,670.81 mi (9,126.29 km) |
| Huntsville to Stamboliyski | 5,575.62 mi (8,973.09 km) |
| Huntsville to Stara Zagora | 5,606.63 mi (9,023.00 km) |
| Huntsville to Svilengrad | 5,657.79 mi (9,105.33 km) |
| Huntsville to Svishtov | 5,542.93 mi (8,920.49 km) |
| Huntsville to Targovishte | 5,606.72 mi (9,023.14 km) |
| Huntsville to Teteven | 5,531.07 mi (8,901.39 km) |
| Huntsville to Troyan | 5,550.24 mi (8,932.25 km) |
| Huntsville to Tryavna | 5,581.66 mi (8,982.82 km) |
| Huntsville to Tutrakan | 5,572.40 mi (8,967.92 km) |
| Huntsville to Varna | 5,659.23 mi (9,107.65 km) |
