| Viersen to Karlovo | 1,048.00 mi (1,686.60 km) |
| Viersen to Karnobat | 1,133.39 mi (1,824.01 km) |
| Viersen to Kavarna | 1,154.30 mi (1,857.66 km) |
| Viersen to Kazanlak | 1,072.07 mi (1,725.34 km) |
| Viersen to Knezha | 981.94 mi (1,580.28 km) |
| Viersen to Kostinbrod | 979.71 mi (1,576.69 km) |
| Viersen to Kozloduy | 956.02 mi (1,538.57 km) |
| Viersen to Kyustendil | 985.34 mi (1,585.76 km) |
| Viersen to Levski | 1,028.73 mi (1,655.59 km) |
| Viersen to Lom | 934.96 mi (1,504.68 km) |
| Viersen to Lovech | 1,022.58 mi (1,645.69 km) |
| Viersen to Lukovit | 998.39 mi (1,606.76 km) |
| Viersen to Lyaskovets | 1,063.18 mi (1,711.02 km) |
| Viersen to Mezdra | 982.72 mi (1,581.54 km) |
| Viersen to Momchilgrad | 1,122.61 mi (1,806.67 km) |
