| Hilton Head Island to Smolyan | 5,482.03 mi (8,822.47 km) |
| Hilton Head Island to Sofia | 5,380.96 mi (8,659.82 km) |
| Hilton Head Island to Sopot | 5,443.13 mi (8,759.87 km) |
| Hilton Head Island to Sozopol | 5,575.83 mi (8,973.44 km) |
| Hilton Head Island to Sredets | 5,557.71 mi (8,944.27 km) |
| Hilton Head Island to Stamboliyski | 5,453.76 mi (8,776.98 km) |
| Hilton Head Island to Stara Zagora | 5,489.47 mi (8,834.45 km) |
| Hilton Head Island to Svilengrad | 5,538.81 mi (8,913.86 km) |
| Hilton Head Island to Svishtov | 5,431.04 mi (8,740.41 km) |
| Hilton Head Island to Targovishte | 5,496.42 mi (8,845.63 km) |
| Hilton Head Island to Teteven | 5,412.52 mi (8,710.60 km) |
| Hilton Head Island to Troyan | 5,432.77 mi (8,743.20 km) |
| Hilton Head Island to Tryavna | 5,466.31 mi (8,797.18 km) |
| Hilton Head Island to Tutrakan | 5,466.31 mi (8,797.18 km) |
| Hilton Head Island to Varna | 5,552.61 mi (8,936.06 km) |
