| Forfar to Karlovo | 1,553.82 mi (2,500.63 km) |
| Forfar to Karnobat | 1,629.18 mi (2,621.91 km) |
| Forfar to Kavarna | 1,637.07 mi (2,634.61 km) |
| Forfar to Kazanlak | 1,575.39 mi (2,535.35 km) |
| Forfar to Knezha | 1,485.48 mi (2,390.66 km) |
| Forfar to Kostinbrod | 1,491.34 mi (2,400.09 km) |
| Forfar to Kozloduy | 1,459.23 mi (2,348.41 km) |
| Forfar to Kyustendil | 1,501.74 mi (2,416.82 km) |
| Forfar to Levski | 1,528.21 mi (2,459.41 km) |
| Forfar to Lom | 1,440.23 mi (2,317.83 km) |
| Forfar to Lovech | 1,525.65 mi (2,455.30 km) |
| Forfar to Lukovit | 1,503.57 mi (2,419.76 km) |
| Forfar to Lyaskovets | 1,561.76 mi (2,513.40 km) |
| Forfar to Mezdra | 1,490.33 mi (2,398.45 km) |
| Forfar to Momchilgrad | 1,632.10 mi (2,626.61 km) |
