| Castricum to Imola | 651.26 mi (1,048.10 km) |
| Castricum to Impruneta | 683.08 mi (1,099.32 km) |
| Castricum to Induno Olona | 499.47 mi (803.82 km) |
| Castricum to Inverigo | 513.68 mi (826.68 km) |
| Castricum to Inveruno | 521.37 mi (839.06 km) |
| Castricum to Inzago | 531.33 mi (855.10 km) |
| Castricum to Iseo | 534.52 mi (860.23 km) |
| Castricum to Isernia | 878.63 mi (1,414.02 km) |
| Castricum to Isola Capo Rizzuto | 1,110.45 mi (1,787.09 km) |
| Castricum to Isola del Liri | 858.46 mi (1,381.55 km) |
| Castricum to Isola della Scala | 579.19 mi (932.11 km) |
| Castricum to Isola Vicentina | 567.41 mi (913.15 km) |
| Castricum to Ispica | 1,197.07 mi (1,926.49 km) |
| Castricum to Istrana | 580.80 mi (934.71 km) |
| Castricum to Itri | 882.27 mi (1,419.88 km) |
