| Castricum to Huelva | 1,196.88 mi (1,926.20 km) |
| Castricum to Huercal de Almeria | 1,135.86 mi (1,827.98 km) |
| Castricum to Huercal-Overa | 1,095.32 mi (1,762.75 km) |
| Castricum to Huesca | 757.57 mi (1,219.20 km) |
| Castricum to Huetor Vega | 1,136.13 mi (1,828.42 km) |
| Castricum to Huetor-Tajar | 1,141.54 mi (1,837.13 km) |
| Castricum to Humanes de Madrid | 939.53 mi (1,512.03 km) |
| Castricum to Ibi | 994.13 mi (1,599.90 km) |
| Castricum to Ibiza | 955.07 mi (1,537.04 km) |
| Castricum to Icod de los Vinos | 1,997.83 mi (3,215.19 km) |
| Castricum to Igualada | 771.11 mi (1,240.98 km) |
| Castricum to Illescas | 948.41 mi (1,526.31 km) |
| Castricum to Inca | 890.57 mi (1,433.24 km) |
| Castricum to Ingenio | 1,989.88 mi (3,202.40 km) |
| Castricum to Irun | 702.46 mi (1,130.50 km) |
