| Altenstadt to Smolyan | 963.43 mi (1,550.48 km) |
| Altenstadt to Sofia | 859.44 mi (1,383.13 km) |
| Altenstadt to Sopot | 915.72 mi (1,473.70 km) |
| Altenstadt to Sozopol | 1,042.34 mi (1,677.48 km) |
| Altenstadt to Sredets | 1,025.14 mi (1,649.81 km) |
| Altenstadt to Stamboliyski | 931.14 mi (1,498.52 km) |
| Altenstadt to Stara Zagora | 960.32 mi (1,545.49 km) |
| Altenstadt to Svilengrad | 1,011.76 mi (1,628.26 km) |
| Altenstadt to Svishtov | 897.66 mi (1,444.64 km) |
| Altenstadt to Targovishte | 962.46 mi (1,548.93 km) |
| Altenstadt to Teteven | 885.11 mi (1,424.45 km) |
| Altenstadt to Troyan | 904.01 mi (1,454.86 km) |
| Altenstadt to Tryavna | 935.37 mi (1,505.33 km) |
| Altenstadt to Tutrakan | 932.03 mi (1,499.96 km) |
| Altenstadt to Varna | 1,018.22 mi (1,638.67 km) |
