| Tadley to Smolyan | 1,392.11 mi (2,240.39 km) |
| Tadley to Sofia | 1,289.65 mi (2,075.49 km) |
| Tadley to Sopot | 1,350.22 mi (2,172.98 km) |
| Tadley to Sozopol | 1,482.57 mi (2,385.96 km) |
| Tadley to Sredets | 1,464.22 mi (2,356.44 km) |
| Tadley to Stamboliyski | 1,362.29 mi (2,192.39 km) |
| Tadley to Stara Zagora | 1,396.24 mi (2,247.03 km) |
| Tadley to Svilengrad | 1,446.13 mi (2,327.32 km) |
| Tadley to Svishtov | 1,337.80 mi (2,152.99 km) |
| Tadley to Targovishte | 1,403.50 mi (2,258.71 km) |
| Tadley to Teteven | 1,319.58 mi (2,123.65 km) |
| Tadley to Troyan | 1,339.57 mi (2,155.82 km) |
| Tadley to Tryavna | 1,372.82 mi (2,209.34 km) |
| Tadley to Tutrakan | 1,375.40 mi (2,213.50 km) |
| Tadley to Varna | 1,461.06 mi (2,351.34 km) |
