| Irthlingborough to Idar-Oberstein | 388.68 mi (625.52 km) |
| Irthlingborough to Idstein | 410.44 mi (660.53 km) |
| Irthlingborough to Illertissen | 550.29 mi (885.60 km) |
| Irthlingborough to Illingen | 391.26 mi (629.67 km) |
| Irthlingborough to Ilmenau | 508.21 mi (817.89 km) |
| Irthlingborough to Ilsede | 455.85 mi (733.63 km) |
| Irthlingborough to Ilsenburg | 480.09 mi (772.63 km) |
| Irthlingborough to Ilsfeld | 486.89 mi (783.57 km) |
| Irthlingborough to Ilvesheim | 445.54 mi (717.03 km) |
| Irthlingborough to Immenstadt im Allgau | 582.10 mi (936.80 km) |
| Irthlingborough to Ingelheim | 409.01 mi (658.24 km) |
| Irthlingborough to Ingolstadt | 582.12 mi (936.83 km) |
| Irthlingborough to Iserlohn | 359.11 mi (577.94 km) |
| Irthlingborough to Isernhagen-Sud | 441.32 mi (710.24 km) |
| Irthlingborough to Ismaning | 610.88 mi (983.11 km) |
