| Gladstone to Idar-Oberstein | 4,678.82 mi (7,529.84 km) |
| Gladstone to Idstein | 4,693.46 mi (7,553.40 km) |
| Gladstone to Illertissen | 4,841.18 mi (7,791.12 km) |
| Gladstone to Illingen | 4,682.51 mi (7,535.77 km) |
| Gladstone to Ilmenau | 4,768.56 mi (7,674.25 km) |
| Gladstone to Ilsede | 4,678.15 mi (7,528.75 km) |
| Gladstone to Ilsenburg | 4,711.60 mi (7,582.59 km) |
| Gladstone to Ilsfeld | 4,776.24 mi (7,686.62 km) |
| Gladstone to Ilvesheim | 4,734.18 mi (7,618.93 km) |
| Gladstone to Immenstadt im Allgau | 4,873.28 mi (7,842.79 km) |
| Gladstone to Ingelheim | 4,695.42 mi (7,556.55 km) |
| Gladstone to Ingolstadt | 4,867.00 mi (7,832.69 km) |
| Gladstone to Iserlohn | 4,625.65 mi (7,444.26 km) |
| Gladstone to Isernhagen-Sud | 4,660.22 mi (7,499.89 km) |
| Gladstone to Ismaning | 4,898.73 mi (7,883.75 km) |
