| Bidston to Smolyan | 1,517.67 mi (2,442.45 km) |
| Bidston to Sofia | 1,414.01 mi (2,275.62 km) |
| Bidston to Sopot | 1,471.24 mi (2,367.74 km) |
| Bidston to Sozopol | 1,597.44 mi (2,570.83 km) |
| Bidston to Sredets | 1,580.57 mi (2,543.69 km) |
| Bidston to Stamboliyski | 1,486.04 mi (2,391.55 km) |
| Bidston to Stara Zagora | 1,515.98 mi (2,439.74 km) |
| Bidston to Svilengrad | 1,567.31 mi (2,522.34 km) |
| Bidston to Svishtov | 1,452.91 mi (2,338.23 km) |
| Bidston to Targovishte | 1,517.32 mi (2,441.90 km) |
| Bidston to Teteven | 1,440.62 mi (2,318.45 km) |
| Bidston to Troyan | 1,459.64 mi (2,349.06 km) |
| Bidston to Tryavna | 1,491.03 mi (2,399.58 km) |
| Bidston to Tutrakan | 1,485.31 mi (2,390.37 km) |
| Bidston to Varna | 1,571.86 mi (2,529.66 km) |
