| Merzenich to Smolyan | 1,073.65 mi (1,727.88 km) |
| Merzenich to Sofia | 969.88 mi (1,560.88 km) |
| Merzenich to Sopot | 1,027.07 mi (1,652.90 km) |
| Merzenich to Sozopol | 1,154.63 mi (1,858.20 km) |
| Merzenich to Sredets | 1,137.29 mi (1,830.29 km) |
| Merzenich to Stamboliyski | 1,041.85 mi (1,676.69 km) |
| Merzenich to Stara Zagora | 1,071.95 mi (1,725.14 km) |
| Merzenich to Svilengrad | 1,123.14 mi (1,807.52 km) |
| Merzenich to Svishtov | 1,009.91 mi (1,625.30 km) |
| Merzenich to Targovishte | 1,074.83 mi (1,729.77 km) |
| Merzenich to Teteven | 996.44 mi (1,603.61 km) |
| Merzenich to Troyan | 1,015.55 mi (1,634.36 km) |
| Merzenich to Tryavna | 1,047.24 mi (1,685.38 km) |
| Merzenich to Tutrakan | 1,044.56 mi (1,681.06 km) |
| Merzenich to Varna | 1,130.73 mi (1,819.74 km) |
