| Castelfidardo to Idar-Oberstein | 522.96 mi (841.62 km) |
| Castelfidardo to Idstein | 528.83 mi (851.07 km) |
| Castelfidardo to Illertissen | 368.15 mi (592.48 km) |
| Castelfidardo to Illingen | 511.97 mi (823.93 km) |
| Castelfidardo to Ilmenau | 513.83 mi (826.93 km) |
| Castelfidardo to Ilsede | 627.67 mi (1,010.14 km) |
| Castelfidardo to Ilsenburg | 595.52 mi (958.39 km) |
| Castelfidardo to Ilsfeld | 436.94 mi (703.19 km) |
| Castelfidardo to Ilvesheim | 477.73 mi (768.83 km) |
| Castelfidardo to Immenstadt im Allgau | 326.01 mi (524.66 km) |
| Castelfidardo to Ingelheim | 519.25 mi (835.65 km) |
| Castelfidardo to Ingolstadt | 379.91 mi (611.41 km) |
| Castelfidardo to Iserlohn | 611.83 mi (984.64 km) |
| Castelfidardo to Isernhagen-Sud | 642.63 mi (1,034.21 km) |
| Castelfidardo to Ismaning | 341.14 mi (549.01 km) |
