| Castricum to Idar-Oberstein | 227.19 mi (365.63 km) |
| Castricum to Idstein | 223.78 mi (360.14 km) |
| Castricum to Illertissen | 382.65 mi (615.81 km) |
| Castricum to Illingen | 242.58 mi (390.39 km) |
| Castricum to Ilmenau | 297.49 mi (478.76 km) |
| Castricum to Ilsede | 233.28 mi (375.43 km) |
| Castricum to Ilsenburg | 259.00 mi (416.82 km) |
| Castricum to Ilsfeld | 313.78 mi (504.98 km) |
| Castricum to Ilvesheim | 271.89 mi (437.56 km) |
| Castricum to Immenstadt im Allgau | 423.00 mi (680.76 km) |
| Castricum to Ingelheim | 230.47 mi (370.90 km) |
| Castricum to Ingolstadt | 394.79 mi (635.36 km) |
| Castricum to Iserlohn | 151.00 mi (243.02 km) |
| Castricum to Isernhagen-Sud | 218.46 mi (351.57 km) |
| Castricum to Ismaning | 429.16 mi (690.66 km) |
