| Blaydon to Smolyan | 1,511.29 mi (2,432.19 km) |
| Blaydon to Sofia | 1,407.03 mi (2,264.39 km) |
| Blaydon to Sopot | 1,460.28 mi (2,350.09 km) |
| Blaydon to Sozopol | 1,579.37 mi (2,541.75 km) |
| Blaydon to Sredets | 1,564.08 mi (2,517.15 km) |
| Blaydon to Stamboliyski | 1,477.89 mi (2,378.44 km) |
| Blaydon to Stara Zagora | 1,503.38 mi (2,419.45 km) |
| Blaydon to Svilengrad | 1,555.89 mi (2,503.96 km) |
| Blaydon to Svishtov | 1,436.01 mi (2,311.04 km) |
| Blaydon to Targovishte | 1,498.72 mi (2,411.96 km) |
| Blaydon to Teteven | 1,429.90 mi (2,301.20 km) |
| Blaydon to Troyan | 1,447.76 mi (2,329.94 km) |
| Blaydon to Tryavna | 1,477.01 mi (2,377.02 km) |
| Blaydon to Tutrakan | 1,463.12 mi (2,354.66 km) |
| Blaydon to Varna | 1,549.96 mi (2,494.41 km) |
