| Neu Isenburg to Karlovo | 920.04 mi (1,480.66 km) |
| Neu Isenburg to Karnobat | 1,007.57 mi (1,621.53 km) |
| Neu Isenburg to Kavarna | 1,031.73 mi (1,660.42 km) |
| Neu Isenburg to Kazanlak | 944.63 mi (1,520.23 km) |
| Neu Isenburg to Knezha | 854.67 mi (1,375.46 km) |
| Neu Isenburg to Kostinbrod | 850.61 mi (1,368.93 km) |
| Neu Isenburg to Kozloduy | 828.91 mi (1,334.01 km) |
| Neu Isenburg to Kyustendil | 855.35 mi (1,376.54 km) |
| Neu Isenburg to Levski | 902.33 mi (1,452.16 km) |
| Neu Isenburg to Lom | 807.41 mi (1,299.40 km) |
| Neu Isenburg to Lovech | 895.32 mi (1,440.88 km) |
| Neu Isenburg to Lukovit | 870.69 mi (1,401.24 km) |
| Neu Isenburg to Lyaskovets | 936.89 mi (1,507.79 km) |
| Neu Isenburg to Mezdra | 854.50 mi (1,375.18 km) |
| Neu Isenburg to Momchilgrad | 993.74 mi (1,599.26 km) |
