| Karhula to Karlovo | 1,238.05 mi (1,992.44 km) |
| Karhula to Karnobat | 1,235.54 mi (1,988.41 km) |
| Karhula to Kavarna | 1,181.70 mi (1,901.76 km) |
| Karhula to Kazanlak | 1,238.36 mi (1,992.95 km) |
| Karhula to Knezha | 1,181.63 mi (1,901.64 km) |
| Karhula to Kostinbrod | 1,232.73 mi (1,983.89 km) |
| Karhula to Kozloduy | 1,163.69 mi (1,872.77 km) |
| Karhula to Kyustendil | 1,272.34 mi (2,047.64 km) |
| Karhula to Levski | 1,187.24 mi (1,910.68 km) |
| Karhula to Lom | 1,163.31 mi (1,872.16 km) |
| Karhula to Lovech | 1,204.46 mi (1,938.39 km) |
| Karhula to Lukovit | 1,201.94 mi (1,934.34 km) |
| Karhula to Lyaskovets | 1,204.37 mi (1,938.24 km) |
| Karhula to Mezdra | 1,207.41 mi (1,943.14 km) |
| Karhula to Momchilgrad | 1,313.12 mi (2,113.26 km) |
