| Castricum to Kocaeli | 1,436.26 mi (2,311.44 km) |
| Castricum to Konak | 1,450.79 mi (2,334.81 km) |
| Castricum to Konakli | 1,717.43 mi (2,763.94 km) |
| Castricum to Konya | 1,674.46 mi (2,694.78 km) |
| Castricum to Koprukoy | 1,949.46 mi (3,137.35 km) |
| Castricum to Korfez | 1,428.24 mi (2,298.53 km) |
| Castricum to Korkut | 2,000.59 mi (3,219.64 km) |
| Castricum to Kose | 1,848.16 mi (2,974.33 km) |
| Castricum to Kovancilar | 1,923.47 mi (3,095.53 km) |
| Castricum to Koyulhisar | 1,769.86 mi (2,848.32 km) |
| Castricum to Kozan | 1,822.01 mi (2,932.24 km) |
| Castricum to Kozlu | 1,476.52 mi (2,376.24 km) |
| Castricum to Kozluk | 2,013.44 mi (3,240.32 km) |
| Castricum to Kucuk Dalyan | 1,897.16 mi (3,053.18 km) |
| Castricum to Kucukcekmece | 1,382.48 mi (2,224.89 km) |
