| Wilmington to Smolyan | 5,265.63 mi (8,474.21 km) |
| Wilmington to Sofia | 5,164.61 mi (8,311.64 km) |
| Wilmington to Sopot | 5,226.87 mi (8,411.84 km) |
| Wilmington to Sozopol | 5,359.81 mi (8,625.79 km) |
| Wilmington to Sredets | 5,341.62 mi (8,596.51 km) |
| Wilmington to Stamboliyski | 5,237.41 mi (8,428.80 km) |
| Wilmington to Stara Zagora | 5,273.26 mi (8,486.49 km) |
| Wilmington to Svilengrad | 5,322.53 mi (8,565.79 km) |
| Wilmington to Svishtov | 5,215.02 mi (8,392.77 km) |
| Wilmington to Targovishte | 5,280.46 mi (8,498.07 km) |
| Wilmington to Teteven | 5,196.27 mi (8,362.58 km) |
| Wilmington to Troyan | 5,216.55 mi (8,395.23 km) |
| Wilmington to Tryavna | 5,250.16 mi (8,449.31 km) |
| Wilmington to Tutrakan | 5,250.55 mi (8,449.95 km) |
| Wilmington to Varna | 5,336.80 mi (8,588.76 km) |
