| Belfast to Idar-Oberstein | 653.51 mi (1,051.72 km) |
| Belfast to Idstein | 669.05 mi (1,076.73 km) |
| Belfast to Illertissen | 816.04 mi (1,313.30 km) |
| Belfast to Illingen | 658.17 mi (1,059.22 km) |
| Belfast to Ilmenau | 754.11 mi (1,213.62 km) |
| Belfast to Ilsede | 680.89 mi (1,095.79 km) |
| Belfast to Ilsenburg | 710.62 mi (1,143.63 km) |
| Belfast to Ilsfeld | 750.78 mi (1,208.27 km) |
| Belfast to Ilvesheim | 708.73 mi (1,140.60 km) |
| Belfast to Immenstadt im Allgau | 849.52 mi (1,367.17 km) |
| Belfast to Ingelheim | 670.23 mi (1,078.63 km) |
| Belfast to Ingolstadt | 842.55 mi (1,355.95 km) |
| Belfast to Iserlohn | 606.30 mi (975.74 km) |
| Belfast to Isernhagen-Sud | 664.04 mi (1,068.66 km) |
| Belfast to Ismaning | 873.50 mi (1,405.77 km) |
