| Kotka to Karlovo | 1,234.71 mi (1,987.07 km) |
| Kotka to Karnobat | 1,232.17 mi (1,982.99 km) |
| Kotka to Kavarna | 1,178.32 mi (1,896.32 km) |
| Kotka to Kazanlak | 1,235.01 mi (1,987.56 km) |
| Kotka to Knezha | 1,178.31 mi (1,896.30 km) |
| Kotka to Kostinbrod | 1,229.43 mi (1,978.58 km) |
| Kotka to Kozloduy | 1,160.38 mi (1,867.45 km) |
| Kotka to Kyustendil | 1,269.06 mi (2,042.36 km) |
| Kotka to Levski | 1,183.90 mi (1,905.30 km) |
| Kotka to Lom | 1,160.01 mi (1,866.86 km) |
| Kotka to Lovech | 1,201.12 mi (1,933.02 km) |
| Kotka to Lukovit | 1,198.62 mi (1,928.99 km) |
| Kotka to Lyaskovets | 1,201.01 mi (1,932.84 km) |
| Kotka to Mezdra | 1,204.10 mi (1,937.81 km) |
| Kotka to Momchilgrad | 1,309.76 mi (2,107.86 km) |
