| Altenburg to Smolyan | 872.39 mi (1,403.97 km) |
| Altenburg to Sofia | 768.39 mi (1,236.60 km) |
| Altenburg to Sopot | 816.98 mi (1,314.81 km) |
| Altenburg to Sozopol | 931.60 mi (1,499.27 km) |
| Altenburg to Sredets | 916.88 mi (1,475.57 km) |
| Altenburg to Stamboliyski | 837.26 mi (1,347.44 km) |
| Altenburg to Stara Zagora | 858.55 mi (1,381.70 km) |
| Altenburg to Svilengrad | 911.72 mi (1,467.28 km) |
| Altenburg to Svishtov | 788.89 mi (1,269.60 km) |
| Altenburg to Targovishte | 850.90 mi (1,369.39 km) |
| Altenburg to Teteven | 787.01 mi (1,266.57 km) |
| Altenburg to Troyan | 803.76 mi (1,293.52 km) |
| Altenburg to Tryavna | 831.31 mi (1,337.87 km) |
| Altenburg to Tutrakan | 814.84 mi (1,311.36 km) |
| Altenburg to Varna | 901.68 mi (1,451.11 km) |
