| Wadern to Smolyan | 1,018.35 mi (1,638.87 km) |
| Wadern to Sofia | 915.66 mi (1,473.60 km) |
| Wadern to Sopot | 976.11 mi (1,570.89 km) |
| Wadern to Sozopol | 1,109.32 mi (1,785.27 km) |
| Wadern to Sredets | 1,090.64 mi (1,755.21 km) |
| Wadern to Stamboliyski | 988.25 mi (1,590.44 km) |
| Wadern to Stara Zagora | 1,022.19 mi (1,645.06 km) |
| Wadern to Svilengrad | 1,072.00 mi (1,725.22 km) |
| Wadern to Svishtov | 964.66 mi (1,552.47 km) |
| Wadern to Targovishte | 1,030.64 mi (1,658.66 km) |
| Wadern to Teteven | 945.46 mi (1,521.57 km) |
| Wadern to Troyan | 965.50 mi (1,553.83 km) |
| Wadern to Tryavna | 998.96 mi (1,607.67 km) |
| Wadern to Tutrakan | 1,004.13 mi (1,616.00 km) |
| Wadern to Varna | 1,089.21 mi (1,752.91 km) |
