| Maidenhead to Smolyan | 1,378.96 mi (2,219.23 km) |
| Maidenhead to Sofia | 1,276.25 mi (2,053.93 km) |
| Maidenhead to Sopot | 1,336.31 mi (2,150.59 km) |
| Maidenhead to Sozopol | 1,467.79 mi (2,362.19 km) |
| Maidenhead to Sredets | 1,449.65 mi (2,332.99 km) |
| Maidenhead to Stamboliyski | 1,348.82 mi (2,170.72 km) |
| Maidenhead to Stara Zagora | 1,382.15 mi (2,224.36 km) |
| Maidenhead to Svilengrad | 1,432.28 mi (2,305.04 km) |
| Maidenhead to Svishtov | 1,323.01 mi (2,129.17 km) |
| Maidenhead to Targovishte | 1,388.55 mi (2,234.65 km) |
| Maidenhead to Teteven | 1,305.66 mi (2,101.25 km) |
| Maidenhead to Troyan | 1,325.50 mi (2,133.19 km) |
| Maidenhead to Tryavna | 1,358.49 mi (2,186.28 km) |
| Maidenhead to Tutrakan | 1,359.92 mi (2,188.57 km) |
| Maidenhead to Varna | 1,445.72 mi (2,326.66 km) |
