| Idar-Oberstein to Grevena | 955.99 mi (1,538.52 km) |
| Idar-Oberstein to Ialysos | 1,387.94 mi (2,233.67 km) |
| Idar-Oberstein to Ilion | 1,142.95 mi (1,839.40 km) |
| Idar-Oberstein to Ilioupoli | 1,150.00 mi (1,850.75 km) |
| Idar-Oberstein to Ioannina | 958.54 mi (1,542.62 km) |
| Idar-Oberstein to Irakleio | 1,338.32 mi (2,153.82 km) |
| Idar-Oberstein to Irakleio | 1,144.39 mi (1,841.72 km) |
| Idar-Oberstein to Kaisariani | 1,148.43 mi (1,848.22 km) |
| Idar-Oberstein to Kalamaria | 985.72 mi (1,586.36 km) |
| Idar-Oberstein to Kalamata | 1,144.27 mi (1,841.53 km) |
| Idar-Oberstein to Kallithea | 1,147.37 mi (1,846.52 km) |
| Idar-Oberstein to Kalymnos | 1,315.34 mi (2,116.83 km) |
| Idar-Oberstein to Kalyvia Thorikou | 1,161.13 mi (1,868.65 km) |
| Idar-Oberstein to Kamatero | 1,141.97 mi (1,837.82 km) |
| Idar-Oberstein to Karditsa | 1,010.56 mi (1,626.34 km) |
