| Kardzhali to Kobarid | 665.94 mi (1,071.72 km) |
| Kardzhali to Kobilje | 563.90 mi (907.50 km) |
| Kardzhali to Kocevje | 592.71 mi (953.87 km) |
| Kardzhali to Komen | 646.57 mi (1,040.56 km) |
| Kardzhali to Komenda | 623.26 mi (1,003.05 km) |
| Kardzhali to Koper | 640.62 mi (1,030.97 km) |
| Kardzhali to Kostanjevica na Krki | 574.09 mi (923.92 km) |
| Kardzhali to Kostel | 586.74 mi (944.27 km) |
| Kardzhali to Kozje | 575.70 mi (926.49 km) |
| Kardzhali to Kranj | 631.44 mi (1,016.21 km) |
| Kardzhali to Kranjska Gora | 663.93 mi (1,068.49 km) |
| Kardzhali to Krizevci | 569.27 mi (916.15 km) |
| Kardzhali to Krsko | 574.87 mi (925.16 km) |
| Kardzhali to Kuzma | 581.92 mi (936.51 km) |
| Kardzhali to Lasko | 591.90 mi (952.58 km) |
