| Welling to Karlovo | 1,303.70 mi (2,098.10 km) |
| Welling to Karnobat | 1,393.83 mi (2,243.15 km) |
| Welling to Kavarna | 1,419.36 mi (2,284.24 km) |
| Welling to Kazanlak | 1,329.10 mi (2,138.98 km) |
| Welling to Knezha | 1,239.56 mi (1,994.89 km) |
| Welling to Kostinbrod | 1,231.82 mi (1,982.42 km) |
| Welling to Kozloduy | 1,214.06 mi (1,953.84 km) |
| Welling to Kyustendil | 1,232.99 mi (1,984.31 km) |
| Welling to Levski | 1,288.16 mi (2,073.09 km) |
| Welling to Lom | 1,191.99 mi (1,918.32 km) |
| Welling to Lovech | 1,280.14 mi (2,060.19 km) |
| Welling to Lukovit | 1,254.91 mi (2,019.58 km) |
| Welling to Lyaskovets | 1,322.80 mi (2,128.84 km) |
| Welling to Mezdra | 1,237.81 mi (1,992.06 km) |
| Welling to Momchilgrad | 1,375.17 mi (2,213.13 km) |
