| Windsor to Smolyan | 1,373.59 mi (2,210.57 km) |
| Windsor to Sofia | 1,270.89 mi (2,045.30 km) |
| Windsor to Sopot | 1,331.00 mi (2,142.03 km) |
| Windsor to Sozopol | 1,462.56 mi (2,353.76 km) |
| Windsor to Sredets | 1,444.40 mi (2,324.53 km) |
| Windsor to Stamboliyski | 1,343.47 mi (2,162.10 km) |
| Windsor to Stara Zagora | 1,376.85 mi (2,215.83 km) |
| Windsor to Svilengrad | 1,426.96 mi (2,296.47 km) |
| Windsor to Svishtov | 1,317.78 mi (2,120.75 km) |
| Windsor to Targovishte | 1,383.33 mi (2,226.26 km) |
| Windsor to Teteven | 1,300.34 mi (2,092.69 km) |
| Windsor to Troyan | 1,320.20 mi (2,124.66 km) |
| Windsor to Tryavna | 1,353.21 mi (2,177.78 km) |
| Windsor to Tutrakan | 1,354.77 mi (2,180.29 km) |
| Windsor to Varna | 1,440.56 mi (2,318.35 km) |
