| Portici to Idar-Oberstein | 702.29 mi (1,130.23 km) |
| Portici to Idstein | 712.27 mi (1,146.28 km) |
| Portici to Illertissen | 552.23 mi (888.73 km) |
| Portici to Illingen | 689.11 mi (1,109.01 km) |
| Portici to Ilmenau | 701.03 mi (1,128.19 km) |
| Portici to Ilsede | 814.87 mi (1,311.40 km) |
| Portici to Ilsenburg | 782.70 mi (1,259.63 km) |
| Portici to Ilsfeld | 620.43 mi (998.49 km) |
| Portici to Ilvesheim | 660.26 mi (1,062.59 km) |
| Portici to Immenstadt im Allgau | 508.79 mi (818.82 km) |
| Portici to Ingelheim | 701.59 mi (1,129.11 km) |
| Portici to Ingolstadt | 567.04 mi (912.56 km) |
| Portici to Iserlohn | 796.03 mi (1,281.09 km) |
| Portici to Isernhagen-Sud | 829.79 mi (1,335.42 km) |
| Portici to Ismaning | 528.28 mi (850.18 km) |
