| Betanzos to Smolyan | 1,671.56 mi (2,690.12 km) |
| Betanzos to Sofia | 1,585.05 mi (2,550.90 km) |
| Betanzos to Sopot | 1,656.21 mi (2,665.41 km) |
| Betanzos to Sozopol | 1,806.00 mi (2,906.47 km) |
| Betanzos to Sredets | 1,782.39 mi (2,868.49 km) |
| Betanzos to Stamboliyski | 1,653.72 mi (2,661.40 km) |
| Betanzos to Stara Zagora | 1,704.23 mi (2,742.70 km) |
| Betanzos to Svilengrad | 1,742.98 mi (2,805.05 km) |
| Betanzos to Svishtov | 1,672.04 mi (2,690.90 km) |
| Betanzos to Targovishte | 1,737.75 mi (2,796.63 km) |
| Betanzos to Teteven | 1,628.30 mi (2,620.49 km) |
| Betanzos to Troyan | 1,651.05 mi (2,657.10 km) |
| Betanzos to Tryavna | 1,690.02 mi (2,719.82 km) |
| Betanzos to Tutrakan | 1,728.50 mi (2,781.76 km) |
| Betanzos to Varna | 1,803.79 mi (2,902.91 km) |
