| Merzig to Smolyan | 1,026.50 mi (1,651.99 km) |
| Merzig to Sofia | 923.98 mi (1,487.00 km) |
| Merzig to Sopot | 984.79 mi (1,584.87 km) |
| Merzig to Sozopol | 1,118.56 mi (1,800.15 km) |
| Merzig to Sredets | 1,099.75 mi (1,769.88 km) |
| Merzig to Stamboliyski | 996.63 mi (1,603.91 km) |
| Merzig to Stara Zagora | 1,031.00 mi (1,659.23 km) |
| Merzig to Svilengrad | 1,080.63 mi (1,739.11 km) |
| Merzig to Svishtov | 973.96 mi (1,567.43 km) |
| Merzig to Targovishte | 1,040.02 mi (1,673.76 km) |
| Merzig to Teteven | 954.16 mi (1,535.57 km) |
| Merzig to Troyan | 974.30 mi (1,567.98 km) |
| Merzig to Tryavna | 1,007.94 mi (1,622.12 km) |
| Merzig to Tutrakan | 1,013.87 mi (1,631.67 km) |
| Merzig to Varna | 1,098.82 mi (1,768.39 km) |
