| Collado-Villalba to Karlovo | 1,487.18 mi (2,393.38 km) |
| Collado-Villalba to Karnobat | 1,597.42 mi (2,570.79 km) |
| Collado-Villalba to Kavarna | 1,660.45 mi (2,672.24 km) |
| Collado-Villalba to Kazanlak | 1,517.36 mi (2,441.96 km) |
| Collado-Villalba to Knezha | 1,447.43 mi (2,329.41 km) |
| Collado-Villalba to Kostinbrod | 1,405.84 mi (2,262.48 km) |
| Collado-Villalba to Kozloduy | 1,429.47 mi (2,300.51 km) |
| Collado-Villalba to Kyustendil | 1,381.14 mi (2,222.72 km) |
| Collado-Villalba to Levski | 1,500.44 mi (2,414.73 km) |
| Collado-Villalba to Lom | 1,404.71 mi (2,260.67 km) |
| Collado-Villalba to Lovech | 1,480.37 mi (2,382.43 km) |
| Collado-Villalba to Lukovit | 1,452.44 mi (2,337.47 km) |
| Collado-Villalba to Lyaskovets | 1,530.83 mi (2,463.64 km) |
| Collado-Villalba to Mezdra | 1,429.10 mi (2,299.92 km) |
| Collado-Villalba to Momchilgrad | 1,526.28 mi (2,456.31 km) |
