| Koper to Jicin | 345.81 mi (556.52 km) |
| Koper to Jihlava | 279.79 mi (450.28 km) |
| Koper to Jindrichuv Hradec | 255.34 mi (410.93 km) |
| Koper to Jirkov | 342.26 mi (550.81 km) |
| Koper to Kadan | 334.13 mi (537.74 km) |
| Koper to Karlovy Vary | 325.84 mi (524.39 km) |
| Koper to Karvina | 371.93 mi (598.56 km) |
| Koper to Kladno | 318.28 mi (512.23 km) |
| Koper to Klasterec nad Ohri | 335.05 mi (539.20 km) |
| Koper to Klatovy | 266.49 mi (428.88 km) |
| Koper to Kolin | 316.80 mi (509.84 km) |
| Koper to Koprivnice | 347.10 mi (558.60 km) |
| Koper to Kralupy nad Vltavou | 325.23 mi (523.40 km) |
| Koper to Kraluv Dvur | 304.32 mi (489.76 km) |
| Koper to Krnov | 363.56 mi (585.09 km) |
