| Colwyn Bay to Karlovo | 1,495.65 mi (2,407.02 km) |
| Colwyn Bay to Karnobat | 1,582.25 mi (2,546.38 km) |
| Colwyn Bay to Kavarna | 1,602.86 mi (2,579.56 km) |
| Colwyn Bay to Kazanlak | 1,520.18 mi (2,446.49 km) |
| Colwyn Bay to Knezha | 1,430.16 mi (2,301.62 km) |
| Colwyn Bay to Kostinbrod | 1,425.82 mi (2,294.64 km) |
| Colwyn Bay to Kozloduy | 1,404.34 mi (2,260.06 km) |
| Colwyn Bay to Kyustendil | 1,429.14 mi (2,299.98 km) |
| Colwyn Bay to Levski | 1,477.41 mi (2,377.66 km) |
| Colwyn Bay to Lom | 1,382.97 mi (2,225.68 km) |
| Colwyn Bay to Lovech | 1,470.81 mi (2,367.04 km) |
| Colwyn Bay to Lukovit | 1,446.29 mi (2,327.57 km) |
| Colwyn Bay to Lyaskovets | 1,511.90 mi (2,433.17 km) |
| Colwyn Bay to Mezdra | 1,430.10 mi (2,301.52 km) |
| Colwyn Bay to Momchilgrad | 1,569.06 mi (2,525.16 km) |
