| Isernhagen-Sud to Smolyan | 1,021.33 mi (1,643.68 km) |
| Isernhagen-Sud to Sofia | 917.33 mi (1,476.30 km) |
| Isernhagen-Sud to Sopot | 965.73 mi (1,554.20 km) |
| Isernhagen-Sud to Sozopol | 1,078.70 mi (1,735.99 km) |
| Isernhagen-Sud to Sredets | 1,064.45 mi (1,713.07 km) |
| Isernhagen-Sud to Stamboliyski | 986.19 mi (1,587.11 km) |
| Isernhagen-Sud to Stara Zagora | 1,007.03 mi (1,620.66 km) |
| Isernhagen-Sud to Svilengrad | 1,060.31 mi (1,706.41 km) |
| Isernhagen-Sud to Svishtov | 936.59 mi (1,507.30 km) |
| Isernhagen-Sud to Targovishte | 997.97 mi (1,606.08 km) |
| Isernhagen-Sud to Teteven | 935.82 mi (1,506.05 km) |
| Isernhagen-Sud to Troyan | 952.42 mi (1,532.77 km) |
| Isernhagen-Sud to Tryavna | 979.59 mi (1,576.50 km) |
| Isernhagen-Sud to Tutrakan | 960.67 mi (1,546.05 km) |
| Isernhagen-Sud to Varna | 1,047.47 mi (1,685.73 km) |
