| Wilmington Island to Smolyan | 5,500.45 mi (8,852.12 km) |
| Wilmington Island to Sofia | 5,399.39 mi (8,689.47 km) |
| Wilmington Island to Sopot | 5,461.55 mi (8,789.52 km) |
| Wilmington Island to Sozopol | 5,594.26 mi (9,003.09 km) |
| Wilmington Island to Sredets | 5,576.13 mi (8,973.92 km) |
| Wilmington Island to Stamboliyski | 5,472.18 mi (8,806.63 km) |
| Wilmington Island to Stara Zagora | 5,507.90 mi (8,864.11 km) |
| Wilmington Island to Svilengrad | 5,557.24 mi (8,943.51 km) |
| Wilmington Island to Svishtov | 5,449.47 mi (8,770.07 km) |
| Wilmington Island to Targovishte | 5,514.85 mi (8,875.29 km) |
| Wilmington Island to Teteven | 5,430.94 mi (8,740.26 km) |
| Wilmington Island to Troyan | 5,451.20 mi (8,772.86 km) |
| Wilmington Island to Tryavna | 5,484.74 mi (8,826.84 km) |
| Wilmington Island to Tutrakan | 5,484.74 mi (8,826.83 km) |
| Wilmington Island to Varna | 5,571.03 mi (8,965.71 km) |
