| Merthyr Tudful to Katwijk | 333.12 mi (536.10 km) |
| Merthyr Tudful to Kerkrade | 412.14 mi (663.27 km) |
| Merthyr Tudful to Klazienaveen | 443.31 mi (713.43 km) |
| Merthyr Tudful to Koog aan de Zaan | 350.45 mi (563.99 km) |
| Merthyr Tudful to Krimpen aan den IJssel | 339.99 mi (547.15 km) |
| Merthyr Tudful to Krommenie | 349.26 mi (562.08 km) |
| Merthyr Tudful to Kudelstaart | 347.24 mi (558.83 km) |
| Merthyr Tudful to Landgraaf | 409.96 mi (659.77 km) |
| Merthyr Tudful to Landsmeer | 355.16 mi (571.57 km) |
| Merthyr Tudful to Langedijk | 351.92 mi (566.36 km) |
| Merthyr Tudful to Laren | 367.79 mi (591.90 km) |
| Merthyr Tudful to Leek | 422.24 mi (679.52 km) |
| Merthyr Tudful to Leerdam | 362.03 mi (582.63 km) |
| Merthyr Tudful to Leeuwarden | 398.20 mi (640.84 km) |
| Merthyr Tudful to Leiden | 336.12 mi (540.94 km) |
