| Slochteren to Smolyan | 1,154.48 mi (1,857.95 km) |
| Slochteren to Sofia | 1,050.25 mi (1,690.21 km) |
| Slochteren to Sopot | 1,100.55 mi (1,771.16 km) |
| Slochteren to Sozopol | 1,215.90 mi (1,956.80 km) |
| Slochteren to Sredets | 1,201.25 mi (1,933.23 km) |
| Slochteren to Stamboliyski | 1,119.95 mi (1,802.38 km) |
| Slochteren to Stara Zagora | 1,142.56 mi (1,838.77 km) |
| Slochteren to Svilengrad | 1,195.58 mi (1,924.10 km) |
| Slochteren to Svishtov | 1,073.26 mi (1,727.25 km) |
| Slochteren to Targovishte | 1,135.19 mi (1,826.91 km) |
| Slochteren to Teteven | 1,070.43 mi (1,722.68 km) |
| Slochteren to Troyan | 1,087.52 mi (1,750.20 km) |
| Slochteren to Tryavna | 1,115.51 mi (1,795.24 km) |
| Slochteren to Tutrakan | 1,098.55 mi (1,767.95 km) |
| Slochteren to Varna | 1,185.38 mi (1,907.68 km) |
