| Rhondda to Jicin | 817.43 mi (1,315.53 km) |
| Rhondda to Jihlava | 846.62 mi (1,362.51 km) |
| Rhondda to Jindrichuv Hradec | 827.02 mi (1,330.96 km) |
| Rhondda to Jirkov | 734.81 mi (1,182.56 km) |
| Rhondda to Kadan | 729.14 mi (1,173.44 km) |
| Rhondda to Karlovy Vary | 714.39 mi (1,149.70 km) |
| Rhondda to Karvina | 964.28 mi (1,551.86 km) |
| Rhondda to Kladno | 768.41 mi (1,236.63 km) |
| Rhondda to Klasterec nad Ohri | 724.72 mi (1,166.32 km) |
| Rhondda to Klatovy | 748.49 mi (1,204.58 km) |
| Rhondda to Kolin | 817.74 mi (1,316.03 km) |
| Rhondda to Koprivnice | 952.11 mi (1,532.27 km) |
| Rhondda to Kralupy nad Vltavou | 775.95 mi (1,248.77 km) |
| Rhondda to Kraluv Dvur | 769.13 mi (1,237.80 km) |
| Rhondda to Krnov | 923.80 mi (1,486.71 km) |
