| Buckhurst Hill to Smolyan | 1,351.32 mi (2,174.75 km) |
| Buckhurst Hill to Sofia | 1,248.37 mi (2,009.05 km) |
| Buckhurst Hill to Sopot | 1,307.86 mi (2,104.80 km) |
| Buckhurst Hill to Sozopol | 1,438.43 mi (2,314.94 km) |
| Buckhurst Hill to Sredets | 1,420.50 mi (2,286.08 km) |
| Buckhurst Hill to Stamboliyski | 1,320.85 mi (2,125.70 km) |
| Buckhurst Hill to Stara Zagora | 1,353.51 mi (2,178.26 km) |
| Buckhurst Hill to Svilengrad | 1,403.88 mi (2,259.33 km) |
| Buckhurst Hill to Svishtov | 1,293.64 mi (2,081.91 km) |
| Buckhurst Hill to Targovishte | 1,359.02 mi (2,187.13 km) |
| Buckhurst Hill to Teteven | 1,277.20 mi (2,055.46 km) |
| Buckhurst Hill to Troyan | 1,296.90 mi (2,087.15 km) |
| Buckhurst Hill to Tryavna | 1,329.60 mi (2,139.78 km) |
| Buckhurst Hill to Tutrakan | 1,329.87 mi (2,140.22 km) |
| Buckhurst Hill to Varna | 1,415.81 mi (2,278.53 km) |
