| Trossingen to Smolyan | 903.43 mi (1,453.93 km) |
| Trossingen to Sofia | 802.12 mi (1,290.89 km) |
| Trossingen to Sopot | 865.19 mi (1,392.39 km) |
| Trossingen to Sozopol | 1,003.03 mi (1,614.22 km) |
| Trossingen to Sredets | 983.17 mi (1,582.25 km) |
| Trossingen to Stamboliyski | 874.93 mi (1,408.06 km) |
| Trossingen to Stara Zagora | 912.14 mi (1,467.96 km) |
| Trossingen to Svilengrad | 960.48 mi (1,545.74 km) |
| Trossingen to Svishtov | 859.24 mi (1,382.81 km) |
| Trossingen to Targovishte | 925.87 mi (1,490.04 km) |
| Trossingen to Teteven | 834.70 mi (1,343.32 km) |
| Trossingen to Troyan | 855.49 mi (1,376.78 km) |
| Trossingen to Tryavna | 890.41 mi (1,432.98 km) |
| Trossingen to Tutrakan | 903.32 mi (1,453.75 km) |
| Trossingen to Varna | 986.75 mi (1,588.02 km) |
