| Waltrop to Smolyan | 1,070.58 mi (1,722.93 km) |
| Waltrop to Sofia | 966.35 mi (1,555.18 km) |
| Waltrop to Sopot | 1,020.46 mi (1,642.26 km) |
| Waltrop to Sozopol | 1,142.84 mi (1,839.23 km) |
| Waltrop to Sredets | 1,126.65 mi (1,813.16 km) |
| Waltrop to Stamboliyski | 1,037.42 mi (1,669.56 km) |
| Waltrop to Stara Zagora | 1,064.13 mi (1,712.56 km) |
| Waltrop to Svilengrad | 1,116.27 mi (1,796.47 km) |
| Waltrop to Svishtov | 998.69 mi (1,607.24 km) |
| Waltrop to Targovishte | 1,062.47 mi (1,709.87 km) |
| Waltrop to Teteven | 989.98 mi (1,593.22 km) |
| Waltrop to Troyan | 1,008.22 mi (1,622.57 km) |
| Waltrop to Tryavna | 1,038.31 mi (1,671.00 km) |
| Waltrop to Tutrakan | 1,029.38 mi (1,656.63 km) |
| Waltrop to Varna | 1,116.04 mi (1,796.10 km) |
