| Tonbridge to Smolyan | 1,331.02 mi (2,142.06 km) |
| Tonbridge to Sofia | 1,228.40 mi (1,976.92 km) |
| Tonbridge to Sopot | 1,288.70 mi (2,073.97 km) |
| Tonbridge to Sozopol | 1,420.71 mi (2,286.42 km) |
| Tonbridge to Sredets | 1,402.43 mi (2,257.00 km) |
| Tonbridge to Stamboliyski | 1,301.00 mi (2,093.76 km) |
| Tonbridge to Stara Zagora | 1,334.64 mi (2,147.89 km) |
| Tonbridge to Svilengrad | 1,384.64 mi (2,228.37 km) |
| Tonbridge to Svishtov | 1,275.94 mi (2,053.43 km) |
| Tonbridge to Targovishte | 1,341.60 mi (2,159.09 km) |
| Tonbridge to Teteven | 1,258.05 mi (2,024.64 km) |
| Tonbridge to Troyan | 1,277.98 mi (2,056.70 km) |
| Tonbridge to Tryavna | 1,311.12 mi (2,110.04 km) |
| Tonbridge to Tutrakan | 1,313.41 mi (2,113.73 km) |
| Tonbridge to Varna | 1,399.08 mi (2,251.61 km) |
