| Wulfrath to Karlovo | 1,024.61 mi (1,648.96 km) |
| Wulfrath to Karnobat | 1,109.08 mi (1,784.89 km) |
| Wulfrath to Kavarna | 1,129.07 mi (1,817.06 km) |
| Wulfrath to Kazanlak | 1,048.43 mi (1,687.29 km) |
| Wulfrath to Knezha | 958.25 mi (1,542.15 km) |
| Wulfrath to Kostinbrod | 957.01 mi (1,540.16 km) |
| Wulfrath to Kozloduy | 932.27 mi (1,500.34 km) |
| Wulfrath to Kyustendil | 963.41 mi (1,550.46 km) |
| Wulfrath to Levski | 1,004.67 mi (1,616.86 km) |
| Wulfrath to Lom | 911.42 mi (1,466.78 km) |
| Wulfrath to Lovech | 998.87 mi (1,607.53 km) |
| Wulfrath to Lukovit | 974.89 mi (1,568.94 km) |
| Wulfrath to Lyaskovets | 1,039.06 mi (1,672.21 km) |
| Wulfrath to Mezdra | 959.49 mi (1,544.16 km) |
| Wulfrath to Momchilgrad | 1,099.73 mi (1,769.84 km) |
