| Southbourne to Smolyan | 1,406.33 mi (2,263.27 km) |
| Southbourne to Sofia | 1,304.67 mi (2,099.67 km) |
| Southbourne to Sopot | 1,366.70 mi (2,199.50 km) |
| Southbourne to Sozopol | 1,501.52 mi (2,416.46 km) |
| Southbourne to Sredets | 1,482.57 mi (2,385.97 km) |
| Southbourne to Stamboliyski | 1,377.45 mi (2,216.78 km) |
| Southbourne to Stara Zagora | 1,413.21 mi (2,274.34 km) |
| Southbourne to Svilengrad | 1,462.34 mi (2,353.41 km) |
| Southbourne to Svishtov | 1,356.95 mi (2,183.81 km) |
| Southbourne to Targovishte | 1,423.05 mi (2,290.18 km) |
| Southbourne to Teteven | 1,336.11 mi (2,150.26 km) |
| Southbourne to Troyan | 1,356.51 mi (2,183.09 km) |
| Southbourne to Tryavna | 1,390.53 mi (2,237.85 km) |
| Southbourne to Tutrakan | 1,396.64 mi (2,247.67 km) |
| Southbourne to Varna | 1,481.76 mi (2,384.65 km) |
