| Caerphilly to Jicin | 808.95 mi (1,301.88 km) |
| Caerphilly to Jihlava | 837.94 mi (1,348.53 km) |
| Caerphilly to Jindrichuv Hradec | 818.27 mi (1,316.88 km) |
| Caerphilly to Jirkov | 726.27 mi (1,168.82 km) |
| Caerphilly to Kadan | 720.57 mi (1,159.65 km) |
| Caerphilly to Karlovy Vary | 705.77 mi (1,135.83 km) |
| Caerphilly to Karvina | 955.79 mi (1,538.19 km) |
| Caerphilly to Kladno | 759.81 mi (1,222.80 km) |
| Caerphilly to Klasterec nad Ohri | 716.15 mi (1,152.53 km) |
| Caerphilly to Klatovy | 739.73 mi (1,190.48 km) |
| Caerphilly to Kolin | 809.16 mi (1,302.22 km) |
| Caerphilly to Koprivnice | 943.55 mi (1,518.50 km) |
| Caerphilly to Kralupy nad Vltavou | 767.39 mi (1,234.99 km) |
| Caerphilly to Kraluv Dvur | 760.49 mi (1,223.89 km) |
| Caerphilly to Krnov | 915.32 mi (1,473.07 km) |
