| Alpena to Idar-Oberstein | 3,988.00 mi (6,418.06 km) |
| Alpena to Idstein | 4,004.21 mi (6,444.16 km) |
| Alpena to Illertissen | 4,150.03 mi (6,678.83 km) |
| Alpena to Illingen | 3,990.98 mi (6,422.86 km) |
| Alpena to Ilmenau | 4,082.43 mi (6,570.03 km) |
| Alpena to Ilsede | 3,994.72 mi (6,428.87 km) |
| Alpena to Ilsenburg | 4,027.75 mi (6,482.04 km) |
| Alpena to Ilsfeld | 4,085.77 mi (6,575.41 km) |
| Alpena to Ilvesheim | 4,043.88 mi (6,508.00 km) |
| Alpena to Immenstadt im Allgau | 4,181.29 mi (6,729.14 km) |
| Alpena to Ingelheim | 4,005.58 mi (6,446.36 km) |
| Alpena to Ingolstadt | 4,177.78 mi (6,723.48 km) |
| Alpena to Iserlohn | 3,938.08 mi (6,337.73 km) |
| Alpena to Isernhagen-Sud | 3,976.85 mi (6,400.13 km) |
| Alpena to Ismaning | 4,208.83 mi (6,773.46 km) |
