| Erkelenz to Karlovo | 1,045.68 mi (1,682.86 km) |
| Erkelenz to Karnobat | 1,131.86 mi (1,821.56 km) |
| Erkelenz to Kavarna | 1,153.71 mi (1,856.72 km) |
| Erkelenz to Kazanlak | 1,069.97 mi (1,721.94 km) |
| Erkelenz to Knezha | 979.89 mi (1,576.98 km) |
| Erkelenz to Kostinbrod | 976.85 mi (1,572.09 km) |
| Erkelenz to Kozloduy | 954.03 mi (1,535.36 km) |
| Erkelenz to Kyustendil | 981.92 mi (1,580.25 km) |
| Erkelenz to Levski | 1,027.00 mi (1,652.80 km) |
| Erkelenz to Lom | 932.80 mi (1,501.19 km) |
| Erkelenz to Lovech | 1,020.54 mi (1,642.40 km) |
| Erkelenz to Lukovit | 996.18 mi (1,603.19 km) |
| Erkelenz to Lyaskovets | 1,061.49 mi (1,708.31 km) |
| Erkelenz to Mezdra | 980.28 mi (1,577.62 km) |
| Erkelenz to Momchilgrad | 1,119.88 mi (1,802.27 km) |
