| Heerlerbaan to Karlovo | 1,051.16 mi (1,691.68 km) |
| Heerlerbaan to Karnobat | 1,138.55 mi (1,832.32 km) |
| Heerlerbaan to Kavarna | 1,161.78 mi (1,869.71 km) |
| Heerlerbaan to Kazanlak | 1,075.77 mi (1,731.28 km) |
| Heerlerbaan to Knezha | 985.81 mi (1,586.51 km) |
| Heerlerbaan to Kostinbrod | 981.50 mi (1,579.57 km) |
| Heerlerbaan to Kozloduy | 960.04 mi (1,545.04 km) |
| Heerlerbaan to Kyustendil | 985.66 mi (1,586.27 km) |
| Heerlerbaan to Levski | 1,033.39 mi (1,663.09 km) |
| Heerlerbaan to Lom | 938.55 mi (1,510.45 km) |
| Heerlerbaan to Lovech | 1,026.46 mi (1,651.92 km) |
| Heerlerbaan to Lukovit | 1,001.83 mi (1,612.29 km) |
| Heerlerbaan to Lyaskovets | 1,067.94 mi (1,718.69 km) |
| Heerlerbaan to Mezdra | 985.60 mi (1,586.16 km) |
| Heerlerbaan to Momchilgrad | 1,124.68 mi (1,810.01 km) |
