| Idar-Oberstein to Kalisz | 491.08 mi (790.31 km) |
| Idar-Oberstein to Kamien Pomorski | 433.15 mi (697.08 km) |
| Idar-Oberstein to Kamienna Gora | 392.10 mi (631.02 km) |
| Idar-Oberstein to Karczew | 627.96 mi (1,010.60 km) |
| Idar-Oberstein to Kartuzy | 561.38 mi (903.45 km) |
| Idar-Oberstein to Katowice | 520.78 mi (838.11 km) |
| Idar-Oberstein to Kedzierzyn-Kozle | 484.78 mi (780.17 km) |
| Idar-Oberstein to Kepno | 480.91 mi (773.95 km) |
| Idar-Oberstein to Ketrzyn | 670.05 mi (1,078.34 km) |
| Idar-Oberstein to Kety | 530.40 mi (853.60 km) |
| Idar-Oberstein to Kielce | 592.60 mi (953.70 km) |
| Idar-Oberstein to Kielczow | 444.96 mi (716.09 km) |
| Idar-Oberstein to Klobuck | 518.86 mi (835.02 km) |
| Idar-Oberstein to Klodzko | 416.76 mi (670.71 km) |
| Idar-Oberstein to Kluczbork | 488.24 mi (785.74 km) |
