| Bacup to Smolyan | 1,492.15 mi (2,401.38 km) |
| Bacup to Sofia | 1,388.25 mi (2,234.17 km) |
| Bacup to Sopot | 1,444.45 mi (2,324.62 km) |
| Bacup to Sozopol | 1,568.88 mi (2,524.86 km) |
| Bacup to Sredets | 1,552.40 mi (2,498.35 km) |
| Bacup to Stamboliyski | 1,460.02 mi (2,349.67 km) |
| Bacup to Stara Zagora | 1,488.79 mi (2,395.97 km) |
| Bacup to Svilengrad | 1,540.46 mi (2,479.13 km) |
| Bacup to Svishtov | 1,424.55 mi (2,292.60 km) |
| Bacup to Targovishte | 1,488.58 mi (2,395.63 km) |
| Bacup to Teteven | 1,413.87 mi (2,275.41 km) |
| Bacup to Troyan | 1,432.60 mi (2,305.54 km) |
| Bacup to Tryavna | 1,463.45 mi (2,355.19 km) |
| Bacup to Tutrakan | 1,455.64 mi (2,342.63 km) |
| Bacup to Varna | 1,542.32 mi (2,482.12 km) |
