| Thun to Smolyan | 916.02 mi (1,474.19 km) |
| Thun to Sofia | 818.36 mi (1,317.02 km) |
| Thun to Sopot | 885.18 mi (1,424.56 km) |
| Thun to Sozopol | 1,028.80 mi (1,655.69 km) |
| Thun to Sredets | 1,007.38 mi (1,621.22 km) |
| Thun to Stamboliyski | 890.71 mi (1,433.46 km) |
| Thun to Stara Zagora | 933.06 mi (1,501.61 km) |
| Thun to Svilengrad | 978.55 mi (1,574.83 km) |
| Thun to Svishtov | 887.59 mi (1,428.44 km) |
| Thun to Targovishte | 954.44 mi (1,536.02 km) |
| Thun to Teteven | 855.27 mi (1,376.43 km) |
| Thun to Troyan | 877.05 mi (1,411.47 km) |
| Thun to Tryavna | 913.87 mi (1,470.74 km) |
| Thun to Tutrakan | 937.31 mi (1,508.46 km) |
| Thun to Varna | 1,017.88 mi (1,638.11 km) |
