| Isernhagen-Sud to Karlovo | 967.96 mi (1,557.78 km) |
| Isernhagen-Sud to Karnobat | 1,042.64 mi (1,677.97 km) |
| Isernhagen-Sud to Kavarna | 1,052.49 mi (1,693.82 km) |
| Isernhagen-Sud to Kazanlak | 989.11 mi (1,591.82 km) |
| Isernhagen-Sud to Knezha | 899.35 mi (1,447.37 km) |
| Isernhagen-Sud to Kostinbrod | 907.44 mi (1,460.38 km) |
| Isernhagen-Sud to Kozloduy | 873.09 mi (1,405.11 km) |
| Isernhagen-Sud to Kyustendil | 920.43 mi (1,481.28 km) |
| Isernhagen-Sud to Levski | 941.65 mi (1,515.43 km) |
| Isernhagen-Sud to Lom | 854.50 mi (1,375.19 km) |
| Isernhagen-Sud to Lovech | 939.39 mi (1,511.81 km) |
| Isernhagen-Sud to Lukovit | 917.68 mi (1,476.86 km) |
| Isernhagen-Sud to Lyaskovets | 975.16 mi (1,569.37 km) |
| Isernhagen-Sud to Mezdra | 905.03 mi (1,456.50 km) |
| Isernhagen-Sud to Momchilgrad | 1,046.98 mi (1,684.96 km) |
