| Postojna to Idar-Oberstein | 420.09 mi (676.07 km) |
| Postojna to Idstein | 411.71 mi (662.58 km) |
| Postojna to Illertissen | 257.47 mi (414.36 km) |
| Postojna to Illingen | 416.00 mi (669.49 km) |
| Postojna to Ilmenau | 371.37 mi (597.66 km) |
| Postojna to Ilsede | 484.03 mi (778.98 km) |
| Postojna to Ilsenburg | 450.30 mi (724.69 km) |
| Postojna to Ilsfeld | 323.96 mi (521.37 km) |
| Postojna to Ilvesheim | 366.37 mi (589.62 km) |
| Postojna to Immenstadt im Allgau | 226.27 mi (364.15 km) |
| Postojna to Ingelheim | 406.67 mi (654.47 km) |
| Postojna to Ingolstadt | 244.28 mi (393.13 km) |
| Postojna to Iserlohn | 489.15 mi (787.20 km) |
| Postojna to Isernhagen-Sud | 500.24 mi (805.06 km) |
| Postojna to Ismaning | 207.35 mi (333.70 km) |
