| Portici to Jicin | 666.24 mi (1,072.22 km) |
| Portici to Jihlava | 595.96 mi (959.11 km) |
| Portici to Jindrichuv Hradec | 576.07 mi (927.10 km) |
| Portici to Jirkov | 670.21 mi (1,078.60 km) |
| Portici to Kadan | 662.29 mi (1,065.85 km) |
| Portici to Karlovy Vary | 654.07 mi (1,052.62 km) |
| Portici to Karvina | 656.46 mi (1,056.47 km) |
| Portici to Kladno | 644.77 mi (1,037.65 km) |
| Portici to Klasterec nad Ohri | 663.26 mi (1,067.42 km) |
| Portici to Klatovy | 594.71 mi (957.10 km) |
| Portici to Kolin | 637.59 mi (1,026.10 km) |
| Portici to Koprivnice | 634.03 mi (1,020.38 km) |
| Portici to Kralupy nad Vltavou | 650.96 mi (1,047.61 km) |
| Portici to Kraluv Dvur | 631.01 mi (1,015.51 km) |
| Portici to Krnov | 660.72 mi (1,063.33 km) |
