| Ruislip to Smolyan | 1,368.77 mi (2,202.82 km) |
| Ruislip to Sofia | 1,265.95 mi (2,037.35 km) |
| Ruislip to Sopot | 1,325.78 mi (2,133.64 km) |
| Ruislip to Sozopol | 1,456.88 mi (2,344.62 km) |
| Ruislip to Sredets | 1,438.82 mi (2,315.56 km) |
| Ruislip to Stamboliyski | 1,338.49 mi (2,154.09 km) |
| Ruislip to Stara Zagora | 1,371.54 mi (2,207.27 km) |
| Ruislip to Svilengrad | 1,421.77 mi (2,288.12 km) |
| Ruislip to Svishtov | 1,312.08 mi (2,111.60 km) |
| Ruislip to Targovishte | 1,377.56 mi (2,216.97 km) |
| Ruislip to Teteven | 1,295.12 mi (2,084.29 km) |
| Ruislip to Troyan | 1,314.90 mi (2,116.13 km) |
| Ruislip to Tryavna | 1,347.77 mi (2,169.03 km) |
| Ruislip to Tutrakan | 1,348.70 mi (2,170.53 km) |
| Ruislip to Varna | 1,434.57 mi (2,308.72 km) |
