| Idar-Oberstein to Isselburg | 151.19 mi (243.31 km) |
| Idar-Oberstein to Issum | 132.15 mi (212.67 km) |
| Idar-Oberstein to Itzehoe | 305.92 mi (492.34 km) |
| Idar-Oberstein to Jena | 206.34 mi (332.07 km) |
| Idar-Oberstein to Jever | 268.09 mi (431.45 km) |
| Idar-Oberstein to Jork | 282.97 mi (455.40 km) |
| Idar-Oberstein to Juchen | 102.45 mi (164.88 km) |
| Idar-Oberstein to Julich | 93.66 mi (150.74 km) |
| Idar-Oberstein to Juterbog | 296.48 mi (477.14 km) |
| Idar-Oberstein to Kaarst | 108.42 mi (174.49 km) |
| Idar-Oberstein to Kaiserslautern | 27.51 mi (44.27 km) |
| Idar-Oberstein to Kalkar | 147.02 mi (236.61 km) |
| Idar-Oberstein to Kall | 67.07 mi (107.93 km) |
| Idar-Oberstein to Kaltenkirchen | 306.81 mi (493.77 km) |
| Idar-Oberstein to Kamen | 130.83 mi (210.55 km) |
