| Frankfort to Idar-Oberstein | 4,360.25 mi (7,017.14 km) |
| Frankfort to Idstein | 4,381.03 mi (7,050.58 km) |
| Frankfort to Illertissen | 4,520.42 mi (7,274.91 km) |
| Frankfort to Illingen | 4,360.92 mi (7,018.23 km) |
| Frankfort to Ilmenau | 4,466.75 mi (7,188.54 km) |
| Frankfort to Ilsede | 4,385.30 mi (7,057.46 km) |
| Frankfort to Ilsenburg | 4,417.32 mi (7,108.99 km) |
| Frankfort to Ilsfeld | 4,458.60 mi (7,175.42 km) |
| Frankfort to Ilvesheim | 4,417.45 mi (7,109.20 km) |
| Frankfort to Immenstadt im Allgau | 4,548.69 mi (7,320.40 km) |
| Frankfort to Ingelheim | 4,380.70 mi (7,050.05 km) |
| Frankfort to Ingolstadt | 4,553.79 mi (7,328.62 km) |
| Frankfort to Iserlohn | 4,319.69 mi (6,951.87 km) |
| Frankfort to Isernhagen-Sud | 4,367.66 mi (7,029.07 km) |
| Frankfort to Ismaning | 4,582.76 mi (7,375.23 km) |
