| Thornton Heath to Smolyan | 1,351.46 mi (2,174.96 km) |
| Thornton Heath to Sofia | 1,248.73 mi (2,009.64 km) |
| Thornton Heath to Sopot | 1,308.78 mi (2,106.28 km) |
| Thornton Heath to Sozopol | 1,440.31 mi (2,317.95 km) |
| Thornton Heath to Sredets | 1,422.15 mi (2,288.73 km) |
| Thornton Heath to Stamboliyski | 1,321.30 mi (2,126.42 km) |
| Thornton Heath to Stara Zagora | 1,354.62 mi (2,180.06 km) |
| Thornton Heath to Svilengrad | 1,404.75 mi (2,260.73 km) |
| Thornton Heath to Svishtov | 1,295.52 mi (2,084.95 km) |
| Thornton Heath to Targovishte | 1,361.08 mi (2,190.45 km) |
| Thornton Heath to Teteven | 1,278.13 mi (2,056.94 km) |
| Thornton Heath to Troyan | 1,297.98 mi (2,088.89 km) |
| Thornton Heath to Tryavna | 1,330.97 mi (2,141.99 km) |
| Thornton Heath to Tutrakan | 1,332.54 mi (2,144.51 km) |
| Thornton Heath to Varna | 1,418.32 mi (2,282.56 km) |
