| Llantrisant to Jicin | 815.77 mi (1,312.86 km) |
| Llantrisant to Jihlava | 844.55 mi (1,359.18 km) |
| Llantrisant to Jindrichuv Hradec | 824.80 mi (1,327.39 km) |
| Llantrisant to Jirkov | 733.05 mi (1,179.73 km) |
| Llantrisant to Kadan | 727.32 mi (1,170.51 km) |
| Llantrisant to Karlovy Vary | 712.47 mi (1,146.61 km) |
| Llantrisant to Karvina | 962.59 mi (1,549.15 km) |
| Llantrisant to Kladno | 766.54 mi (1,233.62 km) |
| Llantrisant to Klasterec nad Ohri | 722.89 mi (1,163.38 km) |
| Llantrisant to Klatovy | 746.22 mi (1,200.93 km) |
| Llantrisant to Kolin | 815.90 mi (1,313.06 km) |
| Llantrisant to Koprivnice | 950.30 mi (1,529.36 km) |
| Llantrisant to Kralupy nad Vltavou | 774.14 mi (1,245.85 km) |
| Llantrisant to Kraluv Dvur | 767.17 mi (1,234.64 km) |
| Llantrisant to Krnov | 922.15 mi (1,484.05 km) |
