| Idar-Oberstein to Idstein | 55.34 mi (89.06 km) |
| Idar-Oberstein to Illertissen | 162.64 mi (261.74 km) |
| Idar-Oberstein to Illingen | 25.93 mi (41.73 km) |
| Idar-Oberstein to Ilmenau | 173.06 mi (278.51 km) |
| Idar-Oberstein to Ilsede | 216.19 mi (347.92 km) |
| Idar-Oberstein to Ilsenburg | 209.35 mi (336.92 km) |
| Idar-Oberstein to Ilsfeld | 98.38 mi (158.32 km) |
| Idar-Oberstein to Ilvesheim | 58.56 mi (94.24 km) |
| Idar-Oberstein to Immenstadt im Allgau | 198.80 mi (319.94 km) |
| Idar-Oberstein to Ingelheim | 37.79 mi (60.81 km) |
| Idar-Oberstein to Ingolstadt | 196.70 mi (316.56 km) |
| Idar-Oberstein to Iserlohn | 116.56 mi (187.58 km) |
| Idar-Oberstein to Isernhagen-Sud | 218.12 mi (351.03 km) |
| Idar-Oberstein to Ismaning | 222.72 mi (358.43 km) |
| Idar-Oberstein to Isny im Allgau | 186.86 mi (300.72 km) |
