| Idar-Oberstein to Kranenburg | 154.52 mi (248.68 km) |
| Idar-Oberstein to Krefeld | 116.76 mi (187.91 km) |
| Idar-Oberstein to Kressbronn am Bodensee | 179.60 mi (289.04 km) |
| Idar-Oberstein to Kreuzau | 80.26 mi (129.16 km) |
| Idar-Oberstein to Kreuztal | 91.40 mi (147.09 km) |
| Idar-Oberstein to Kriftel | 57.40 mi (92.37 km) |
| Idar-Oberstein to Kronach | 182.09 mi (293.05 km) |
| Idar-Oberstein to Kronberg | 62.03 mi (99.83 km) |
| Idar-Oberstein to Kronshagen | 340.30 mi (547.66 km) |
| Idar-Oberstein to Krumbach | 171.35 mi (275.77 km) |
| Idar-Oberstein to Kulmbach | 185.28 mi (298.17 km) |
| Idar-Oberstein to Kummersbruck | 205.79 mi (331.18 km) |
| Idar-Oberstein to Kunzell | 121.20 mi (195.05 km) |
| Idar-Oberstein to Kunzelsau | 110.39 mi (177.66 km) |
| Idar-Oberstein to Kurort Steinbach-Hallenberg | 159.27 mi (256.32 km) |
