| Willich to Karlovo | 1,042.40 mi (1,677.58 km) |
| Willich to Karnobat | 1,127.57 mi (1,814.64 km) |
| Willich to Kavarna | 1,148.26 mi (1,847.95 km) |
| Willich to Kazanlak | 1,066.41 mi (1,716.22 km) |
| Willich to Knezha | 976.26 mi (1,571.14 km) |
| Willich to Kostinbrod | 974.27 mi (1,567.93 km) |
| Willich to Kozloduy | 950.33 mi (1,529.41 km) |
| Willich to Kyustendil | 980.08 mi (1,577.29 km) |
| Willich to Levski | 1,022.97 mi (1,646.31 km) |
| Willich to Lom | 929.32 mi (1,495.60 km) |
| Willich to Lovech | 1,016.90 mi (1,636.55 km) |
| Willich to Lukovit | 992.76 mi (1,597.70 km) |
| Willich to Lyaskovets | 1,057.41 mi (1,701.73 km) |
| Willich to Mezdra | 977.16 mi (1,572.58 km) |
| Willich to Momchilgrad | 1,117.13 mi (1,797.85 km) |
