| Portes-les-Valence to Karlovo | 1,003.86 mi (1,615.56 km) |
| Portes-les-Valence to Karnobat | 1,110.58 mi (1,787.31 km) |
| Portes-les-Valence to Kavarna | 1,163.00 mi (1,871.67 km) |
| Portes-les-Valence to Kazanlak | 1,033.38 mi (1,663.06 km) |
| Portes-les-Valence to Knezha | 954.07 mi (1,535.43 km) |
| Portes-les-Valence to Kostinbrod | 922.86 mi (1,485.20 km) |
| Portes-les-Valence to Kozloduy | 932.94 mi (1,501.43 km) |
| Portes-les-Valence to Kyustendil | 907.13 mi (1,459.88 km) |
| Portes-les-Valence to Levski | 1,007.49 mi (1,621.40 km) |
| Portes-les-Valence to Lom | 908.12 mi (1,461.48 km) |
| Portes-les-Valence to Lovech | 990.83 mi (1,594.58 km) |
| Portes-les-Valence to Lukovit | 962.80 mi (1,549.48 km) |
| Portes-les-Valence to Lyaskovets | 1,040.34 mi (1,674.27 km) |
| Portes-les-Valence to Mezdra | 940.77 mi (1,514.02 km) |
| Portes-les-Valence to Momchilgrad | 1,056.85 mi (1,700.84 km) |
