| Gurnee to Idar-Oberstein | 4,279.91 mi (6,887.85 km) |
| Gurnee to Idstein | 4,295.94 mi (6,913.64 km) |
| Gurnee to Illertissen | 4,441.97 mi (7,148.67 km) |
| Gurnee to Illingen | 4,282.95 mi (6,892.74 km) |
| Gurnee to Ilmenau | 4,373.67 mi (7,038.74 km) |
| Gurnee to Ilsede | 4,285.43 mi (6,896.74 km) |
| Gurnee to Ilsenburg | 4,318.55 mi (6,950.04 km) |
| Gurnee to Ilsfeld | 4,377.65 mi (7,045.14 km) |
| Gurnee to Ilvesheim | 4,335.73 mi (6,977.69 km) |
| Gurnee to Immenstadt im Allgau | 4,473.30 mi (7,199.08 km) |
| Gurnee to Ingelheim | 4,297.38 mi (6,915.97 km) |
| Gurnee to Ingolstadt | 4,469.51 mi (7,192.98 km) |
| Gurnee to Iserlohn | 4,229.55 mi (6,806.81 km) |
| Gurnee to Isernhagen-Sud | 4,267.55 mi (6,867.96 km) |
| Gurnee to Ismaning | 4,500.65 mi (7,243.09 km) |
