| Castellabate to Juprelle | 851.82 mi (1,370.88 km) |
| Castellabate to Jurbise | 885.52 mi (1,425.11 km) |
| Castellabate to Kalmthout | 916.41 mi (1,474.81 km) |
| Castellabate to Kampenhout | 890.05 mi (1,432.39 km) |
| Castellabate to Kapelle-op-den-Bos | 899.07 mi (1,446.91 km) |
| Castellabate to Kapellen | 913.62 mi (1,470.34 km) |
| Castellabate to Kasterlee | 896.55 mi (1,442.85 km) |
| Castellabate to Keerbergen | 891.23 mi (1,434.30 km) |
| Castellabate to Kinrooi | 870.93 mi (1,401.63 km) |
| Castellabate to Knokke-Heist | 946.16 mi (1,522.70 km) |
| Castellabate to Koekelare | 941.95 mi (1,515.91 km) |
| Castellabate to Koekelberg | 891.89 mi (1,435.37 km) |
| Castellabate to Koksijde | 952.13 mi (1,532.30 km) |
| Castellabate to Kontich | 903.16 mi (1,453.49 km) |
| Castellabate to Kortemark | 936.90 mi (1,507.80 km) |
