| Merthyr Tudful to Juprelle | 391.76 mi (630.48 km) |
| Merthyr Tudful to Jurbise | 327.64 mi (527.28 km) |
| Merthyr Tudful to Kalmthout | 337.70 mi (543.47 km) |
| Merthyr Tudful to Kampenhout | 346.43 mi (557.53 km) |
| Merthyr Tudful to Kapelle-op-den-Bos | 337.57 mi (543.27 km) |
| Merthyr Tudful to Kapellen | 336.88 mi (542.16 km) |
| Merthyr Tudful to Kasterlee | 359.65 mi (578.79 km) |
| Merthyr Tudful to Keerbergen | 349.02 mi (561.70 km) |
| Merthyr Tudful to Kinrooi | 394.58 mi (635.01 km) |
| Merthyr Tudful to Knokke-Heist | 287.64 mi (462.91 km) |
| Merthyr Tudful to Koekelare | 277.57 mi (446.71 km) |
| Merthyr Tudful to Koekelberg | 338.38 mi (544.57 km) |
| Merthyr Tudful to Koksijde | 263.41 mi (423.92 km) |
| Merthyr Tudful to Kontich | 339.60 mi (546.54 km) |
| Merthyr Tudful to Kortemark | 281.20 mi (452.54 km) |
