| Merchweiler to Smolyan | 1,005.83 mi (1,618.73 km) |
| Merchweiler to Sofia | 903.26 mi (1,453.66 km) |
| Merchweiler to Sopot | 963.99 mi (1,551.39 km) |
| Merchweiler to Sozopol | 1,097.69 mi (1,766.56 km) |
| Merchweiler to Sredets | 1,078.89 mi (1,736.30 km) |
| Merchweiler to Stamboliyski | 975.89 mi (1,570.55 km) |
| Merchweiler to Stara Zagora | 1,010.17 mi (1,625.71 km) |
| Merchweiler to Svilengrad | 1,059.84 mi (1,705.65 km) |
| Merchweiler to Svishtov | 953.09 mi (1,533.84 km) |
| Merchweiler to Targovishte | 1,019.15 mi (1,640.17 km) |
| Merchweiler to Teteven | 933.35 mi (1,502.08 km) |
| Merchweiler to Troyan | 953.47 mi (1,534.47 km) |
| Merchweiler to Tryavna | 987.08 mi (1,588.56 km) |
| Merchweiler to Tutrakan | 993.03 mi (1,598.13 km) |
| Merchweiler to Varna | 1,077.97 mi (1,734.82 km) |
