| Porthcawl to Jicin | 829.48 mi (1,334.91 km) |
| Porthcawl to Jihlava | 857.91 mi (1,380.67 km) |
| Porthcawl to Jindrichuv Hradec | 838.01 mi (1,348.65 km) |
| Porthcawl to Jirkov | 746.69 mi (1,201.68 km) |
| Porthcawl to Kadan | 740.90 mi (1,192.36 km) |
| Porthcawl to Karlovy Vary | 725.97 mi (1,168.33 km) |
| Porthcawl to Karvina | 976.28 mi (1,571.16 km) |
| Porthcawl to Kladno | 780.08 mi (1,255.41 km) |
| Porthcawl to Klasterec nad Ohri | 736.47 mi (1,185.23 km) |
| Porthcawl to Klatovy | 759.38 mi (1,222.11 km) |
| Porthcawl to Kolin | 829.46 mi (1,334.89 km) |
| Porthcawl to Koprivnice | 963.89 mi (1,551.24 km) |
| Porthcawl to Kralupy nad Vltavou | 787.72 mi (1,267.72 km) |
| Porthcawl to Kraluv Dvur | 780.63 mi (1,256.30 km) |
| Porthcawl to Krnov | 935.85 mi (1,506.11 km) |
