| Muttenz to Smolyan | 931.57 mi (1,499.22 km) |
| Muttenz to Sofia | 831.97 mi (1,338.93 km) |
| Muttenz to Sopot | 897.06 mi (1,443.69 km) |
| Muttenz to Sozopol | 1,037.98 mi (1,670.46 km) |
| Muttenz to Sredets | 1,017.32 mi (1,637.22 km) |
| Muttenz to Stamboliyski | 904.67 mi (1,455.93 km) |
| Muttenz to Stara Zagora | 944.56 mi (1,520.12 km) |
| Muttenz to Svilengrad | 991.53 mi (1,595.71 km) |
| Muttenz to Svishtov | 895.25 mi (1,440.77 km) |
| Muttenz to Targovishte | 962.08 mi (1,548.33 km) |
| Muttenz to Teteven | 866.81 mi (1,395.00 km) |
| Muttenz to Troyan | 888.14 mi (1,429.32 km) |
| Muttenz to Tryavna | 924.07 mi (1,487.14 km) |
| Muttenz to Tutrakan | 942.11 mi (1,516.18 km) |
| Muttenz to Varna | 1,024.28 mi (1,648.42 km) |
