| Portage to Idar-Oberstein | 4,199.69 mi (6,758.75 km) |
| Portage to Idstein | 4,217.10 mi (6,786.76 km) |
| Portage to Illertissen | 4,361.36 mi (7,018.93 km) |
| Portage to Illingen | 4,202.07 mi (6,762.58 km) |
| Portage to Ilmenau | 4,297.24 mi (6,915.73 km) |
| Portage to Ilsede | 4,210.97 mi (6,776.89 km) |
| Portage to Ilsenburg | 4,243.78 mi (6,829.71 km) |
| Portage to Ilsfeld | 4,297.69 mi (6,916.46 km) |
| Portage to Ilvesheim | 4,255.96 mi (6,849.30 km) |
| Portage to Immenstadt im Allgau | 4,391.85 mi (7,068.00 km) |
| Portage to Ingelheim | 4,218.03 mi (6,788.26 km) |
| Portage to Ingolstadt | 4,390.58 mi (7,065.96 km) |
| Portage to Iserlohn | 4,152.13 mi (6,682.20 km) |
| Portage to Isernhagen-Sud | 4,193.14 mi (6,748.21 km) |
| Portage to Ismaning | 4,421.12 mi (7,115.10 km) |
