| Soignies to Sofia | 1,058.68 mi (1,703.78 km) |
| Soignies to Sopot | 1,118.39 mi (1,799.88 km) |
| Soignies to Sozopol | 1,249.88 mi (2,011.49 km) |
| Soignies to Sredets | 1,231.67 mi (1,982.18 km) |
| Soignies to Stamboliyski | 1,131.18 mi (1,820.45 km) |
| Soignies to Stara Zagora | 1,164.17 mi (1,873.55 km) |
| Soignies to Svilengrad | 1,214.39 mi (1,954.36 km) |
| Soignies to Svishtov | 1,105.10 mi (1,778.49 km) |
| Soignies to Targovishte | 1,170.73 mi (1,884.11 km) |
| Soignies to Teteven | 1,087.73 mi (1,750.54 km) |
| Soignies to Troyan | 1,107.53 mi (1,782.40 km) |
| Soignies to Tryavna | 1,140.48 mi (1,835.42 km) |
| Soignies to Tutrakan | 1,142.61 mi (1,838.85 km) |
| Soignies to Varna | 1,228.23 mi (1,976.65 km) |
| Soignies to Veliki Preslav | 1,183.72 mi (1,905.01 km) |
