| Kew Green to Smolyan | 1,359.30 mi (2,187.58 km) |
| Kew Green to Sofia | 1,256.48 mi (2,022.11 km) |
| Kew Green to Sopot | 1,316.31 mi (2,118.39 km) |
| Kew Green to Sozopol | 1,447.43 mi (2,329.42 km) |
| Kew Green to Sredets | 1,429.37 mi (2,300.35 km) |
| Kew Green to Stamboliyski | 1,329.01 mi (2,138.84 km) |
| Kew Green to Stara Zagora | 1,362.07 mi (2,192.04 km) |
| Kew Green to Svilengrad | 1,412.30 mi (2,272.88 km) |
| Kew Green to Svishtov | 1,302.64 mi (2,096.40 km) |
| Kew Green to Targovishte | 1,368.12 mi (2,201.78 km) |
| Kew Green to Teteven | 1,285.65 mi (2,069.05 km) |
| Kew Green to Troyan | 1,305.43 mi (2,100.89 km) |
| Kew Green to Tryavna | 1,338.31 mi (2,153.80 km) |
| Kew Green to Tutrakan | 1,339.30 mi (2,155.40 km) |
| Kew Green to Varna | 1,425.16 mi (2,293.57 km) |
