| North Charleston to Smolyan | 5,419.44 mi (8,721.74 km) |
| North Charleston to Sofia | 5,318.31 mi (8,558.98 km) |
| North Charleston to Sopot | 5,380.39 mi (8,658.89 km) |
| North Charleston to Sozopol | 5,512.94 mi (8,872.22 km) |
| North Charleston to Sredets | 5,494.85 mi (8,843.11 km) |
| North Charleston to Stamboliyski | 5,391.10 mi (8,676.14 km) |
| North Charleston to Stara Zagora | 5,426.70 mi (8,733.43 km) |
| North Charleston to Svilengrad | 5,476.09 mi (8,812.92 km) |
| North Charleston to Svishtov | 5,368.15 mi (8,639.19 km) |
| North Charleston to Targovishte | 5,433.50 mi (8,744.37 km) |
| North Charleston to Teteven | 5,349.77 mi (8,609.63 km) |
| North Charleston to Troyan | 5,370.00 mi (8,642.18 km) |
| North Charleston to Tryavna | 5,403.50 mi (8,696.09 km) |
| North Charleston to Tutrakan | 5,403.31 mi (8,695.79 km) |
| North Charleston to Varna | 5,489.62 mi (8,834.69 km) |
