| Colne to Karlovo | 1,449.79 mi (2,333.22 km) |
| Colne to Karnobat | 1,533.69 mi (2,468.23 km) |
| Colne to Kavarna | 1,551.27 mi (2,496.52 km) |
| Colne to Kazanlak | 1,473.60 mi (2,371.53 km) |
| Colne to Knezha | 1,383.40 mi (2,226.37 km) |
| Colne to Kostinbrod | 1,381.77 mi (2,223.75 km) |
| Colne to Kozloduy | 1,357.40 mi (2,184.53 km) |
| Colne to Kyustendil | 1,387.08 mi (2,232.28 km) |
| Colne to Levski | 1,429.60 mi (2,300.71 km) |
| Colne to Lom | 1,336.60 mi (2,151.05 km) |
| Colne to Lovech | 1,424.02 mi (2,291.74 km) |
| Colne to Lukovit | 1,400.08 mi (2,253.21 km) |
| Colne to Lyaskovets | 1,463.93 mi (2,355.96 km) |
| Colne to Mezdra | 1,384.63 mi (2,228.35 km) |
| Colne to Momchilgrad | 1,524.66 mi (2,453.71 km) |
