| Idar-Oberstein to Kastoria | 928.08 mi (1,493.60 km) |
| Idar-Oberstein to Katerini | 984.87 mi (1,585.00 km) |
| Idar-Oberstein to Keratsini | 1,143.59 mi (1,840.43 km) |
| Idar-Oberstein to Kerkyra | 930.03 mi (1,496.74 km) |
| Idar-Oberstein to Kiato | 1,111.53 mi (1,788.84 km) |
| Idar-Oberstein to Kifisia | 1,144.38 mi (1,841.71 km) |
| Idar-Oberstein to Kilkis | 963.24 mi (1,550.19 km) |
| Idar-Oberstein to Komotini | 1,056.42 mi (1,700.15 km) |
| Idar-Oberstein to Korinthos | 1,121.43 mi (1,804.77 km) |
| Idar-Oberstein to Koropi | 1,156.07 mi (1,860.51 km) |
| Idar-Oberstein to Korydallos | 1,143.87 mi (1,840.87 km) |
| Idar-Oberstein to Kos | 1,331.69 mi (2,143.16 km) |
| Idar-Oberstein to Kozani | 957.45 mi (1,540.86 km) |
| Idar-Oberstein to Lagos | 1,042.44 mi (1,677.65 km) |
| Idar-Oberstein to Lamia | 1,053.06 mi (1,694.73 km) |
