| Gahanna to Idar-Oberstein | 4,195.50 mi (6,752.00 km) |
| Gahanna to Idstein | 4,216.01 mi (6,785.01 km) |
| Gahanna to Illertissen | 4,355.83 mi (7,010.04 km) |
| Gahanna to Illingen | 4,196.33 mi (6,753.34 km) |
| Gahanna to Ilmenau | 4,301.36 mi (6,922.37 km) |
| Gahanna to Ilsede | 4,219.64 mi (6,790.86 km) |
| Gahanna to Ilsenburg | 4,251.70 mi (6,842.46 km) |
| Gahanna to Ilsfeld | 4,293.83 mi (6,910.26 km) |
| Gahanna to Ilvesheim | 4,252.63 mi (6,843.95 km) |
| Gahanna to Immenstadt im Allgau | 4,384.32 mi (7,055.88 km) |
| Gahanna to Ingelheim | 4,215.78 mi (6,784.64 km) |
| Gahanna to Ingolstadt | 4,388.85 mi (7,063.18 km) |
| Gahanna to Iserlohn | 4,154.40 mi (6,685.86 km) |
| Gahanna to Isernhagen-Sud | 4,202.00 mi (6,762.46 km) |
| Gahanna to Ismaning | 4,417.95 mi (7,110.01 km) |
