| Iserlohn to Karlovo | 1,004.21 mi (1,616.11 km) |
| Iserlohn to Karnobat | 1,087.37 mi (1,749.96 km) |
| Iserlohn to Kavarna | 1,106.02 mi (1,779.97 km) |
| Iserlohn to Kazanlak | 1,027.67 mi (1,653.87 km) |
| Iserlohn to Knezha | 937.44 mi (1,508.66 km) |
| Iserlohn to Kostinbrod | 937.56 mi (1,508.85 km) |
| Iserlohn to Kozloduy | 911.39 mi (1,466.73 km) |
| Iserlohn to Kyustendil | 944.96 mi (1,520.76 km) |
| Iserlohn to Levski | 983.34 mi (1,582.53 km) |
| Iserlohn to Lom | 890.83 mi (1,433.65 km) |
| Iserlohn to Lovech | 978.03 mi (1,573.99 km) |
| Iserlohn to Lukovit | 954.34 mi (1,535.87 km) |
| Iserlohn to Lyaskovets | 1,017.64 mi (1,637.74 km) |
| Iserlohn to Mezdra | 939.32 mi (1,511.69 km) |
| Iserlohn to Momchilgrad | 1,079.97 mi (1,738.04 km) |
