| Castricum to Kalisz | 570.41 mi (917.99 km) |
| Castricum to Kamien Pomorski | 428.64 mi (689.83 km) |
| Castricum to Kamienna Gora | 501.58 mi (807.22 km) |
| Castricum to Karczew | 699.62 mi (1,125.93 km) |
| Castricum to Kartuzy | 569.47 mi (916.47 km) |
| Castricum to Katowice | 637.08 mi (1,025.27 km) |
| Castricum to Kedzierzyn-Kozle | 601.22 mi (967.58 km) |
| Castricum to Kepno | 573.38 mi (922.76 km) |
| Castricum to Ketrzyn | 696.39 mi (1,120.73 km) |
| Castricum to Kety | 654.38 mi (1,053.12 km) |
| Castricum to Kielce | 691.80 mi (1,113.34 km) |
| Castricum to Kielczow | 542.14 mi (872.49 km) |
| Castricum to Klobuck | 619.75 mi (997.39 km) |
| Castricum to Klodzko | 535.14 mi (861.23 km) |
| Castricum to Kluczbork | 588.49 mi (947.09 km) |
