| Bydgoszcz to Smolyan | 855.79 mi (1,377.26 km) |
| Bydgoszcz to Sofia | 760.68 mi (1,224.20 km) |
| Bydgoszcz to Sopot | 787.39 mi (1,267.18 km) |
| Bydgoszcz to Sozopol | 864.28 mi (1,390.93 km) |
| Bydgoszcz to Sredets | 856.72 mi (1,378.76 km) |
| Bydgoszcz to Stamboliyski | 817.08 mi (1,314.97 km) |
| Bydgoszcz to Stara Zagora | 818.38 mi (1,317.06 km) |
| Bydgoszcz to Svilengrad | 871.79 mi (1,403.02 km) |
| Bydgoszcz to Svishtov | 737.42 mi (1,186.76 km) |
| Bydgoszcz to Targovishte | 787.12 mi (1,266.75 km) |
| Bydgoszcz to Teteven | 761.55 mi (1,225.60 km) |
| Bydgoszcz to Troyan | 771.74 mi (1,241.99 km) |
| Bydgoszcz to Tryavna | 787.84 mi (1,267.90 km) |
| Bydgoszcz to Tutrakan | 739.08 mi (1,189.43 km) |
| Bydgoszcz to Varna | 821.23 mi (1,321.65 km) |
