| Boscombe to Smolyan | 1,408.15 mi (2,266.20 km) |
| Boscombe to Sofia | 1,306.50 mi (2,102.61 km) |
| Boscombe to Sopot | 1,368.54 mi (2,202.45 km) |
| Boscombe to Sozopol | 1,503.36 mi (2,419.43 km) |
| Boscombe to Sredets | 1,484.41 mi (2,388.93 km) |
| Boscombe to Stamboliyski | 1,379.27 mi (2,219.72 km) |
| Boscombe to Stara Zagora | 1,415.05 mi (2,277.30 km) |
| Boscombe to Svilengrad | 1,464.17 mi (2,356.36 km) |
| Boscombe to Svishtov | 1,358.80 mi (2,186.78 km) |
| Boscombe to Targovishte | 1,424.90 mi (2,293.15 km) |
| Boscombe to Teteven | 1,337.94 mi (2,153.21 km) |
| Boscombe to Troyan | 1,358.34 mi (2,186.04 km) |
| Boscombe to Tryavna | 1,392.37 mi (2,240.81 km) |
| Boscombe to Tutrakan | 1,398.49 mi (2,250.64 km) |
| Boscombe to Varna | 1,483.60 mi (2,387.63 km) |
