| Castalla to Kidricevo | 994.43 mi (1,600.38 km) |
| Castalla to Kobarid | 896.40 mi (1,442.62 km) |
| Castalla to Kobilje | 1,028.41 mi (1,655.06 km) |
| Castalla to Kocevje | 930.59 mi (1,497.64 km) |
| Castalla to Komen | 888.69 mi (1,430.21 km) |
| Castalla to Komenda | 934.88 mi (1,504.54 km) |
| Castalla to Koper | 879.18 mi (1,414.90 km) |
| Castalla to Kostanjevica na Krki | 961.25 mi (1,546.99 km) |
| Castalla to Kostel | 928.77 mi (1,494.71 km) |
| Castalla to Kozje | 973.93 mi (1,567.39 km) |
| Castalla to Kranj | 928.54 mi (1,494.35 km) |
| Castalla to Kranjska Gora | 913.49 mi (1,470.12 km) |
| Castalla to Krizevci | 1,013.83 mi (1,631.60 km) |
| Castalla to Krsko | 966.90 mi (1,556.08 km) |
| Castalla to Kuzma | 1,020.03 mi (1,641.57 km) |
