| Trieste to Idar-Oberstein | 410.77 mi (661.07 km) |
| Trieste to Idstein | 405.28 mi (652.24 km) |
| Trieste to Illertissen | 248.34 mi (399.67 km) |
| Trieste to Illingen | 405.39 mi (652.41 km) |
| Trieste to Ilmenau | 371.70 mi (598.20 km) |
| Trieste to Ilsede | 485.09 mi (780.68 km) |
| Trieste to Ilsenburg | 451.83 mi (727.16 km) |
| Trieste to Ilsfeld | 316.04 mi (508.61 km) |
| Trieste to Ilvesheim | 358.42 mi (576.82 km) |
| Trieste to Immenstadt im Allgau | 214.40 mi (345.04 km) |
| Trieste to Ingelheim | 399.22 mi (642.49 km) |
| Trieste to Ingolstadt | 241.58 mi (388.79 km) |
| Trieste to Iserlohn | 484.34 mi (779.47 km) |
| Trieste to Isernhagen-Sud | 500.92 mi (806.15 km) |
| Trieste to Ismaning | 203.63 mi (327.72 km) |
