| Ostend to Sofia | 1,122.71 mi (1,806.82 km) |
| Ostend to Sopot | 1,181.57 mi (1,901.55 km) |
| Ostend to Sozopol | 1,311.39 mi (2,110.49 km) |
| Ostend to Sredets | 1,293.60 mi (2,081.84 km) |
| Ostend to Stamboliyski | 1,195.06 mi (1,923.27 km) |
| Ostend to Stara Zagora | 1,227.01 mi (1,974.69 km) |
| Ostend to Svilengrad | 1,277.62 mi (2,056.13 km) |
| Ostend to Svishtov | 1,166.61 mi (1,877.47 km) |
| Ostend to Targovishte | 1,231.90 mi (1,982.54 km) |
| Ostend to Teteven | 1,150.91 mi (1,852.20 km) |
| Ostend to Troyan | 1,170.45 mi (1,883.65 km) |
| Ostend to Tryavna | 1,202.89 mi (1,935.87 km) |
| Ostend to Tutrakan | 1,202.56 mi (1,935.33 km) |
| Ostend to Varna | 1,288.53 mi (2,073.69 km) |
| Ostend to Veliki Preslav | 1,244.84 mi (2,003.38 km) |
