| Harpenden to Katwijk | 204.50 mi (329.12 km) |
| Harpenden to Kerkrade | 284.63 mi (458.07 km) |
| Harpenden to Klazienaveen | 316.36 mi (509.14 km) |
| Harpenden to Koog aan de Zaan | 222.98 mi (358.86 km) |
| Harpenden to Krimpen aan den IJssel | 210.65 mi (339.01 km) |
| Harpenden to Krommenie | 222.00 mi (357.27 km) |
| Harpenden to Kudelstaart | 218.70 mi (351.97 km) |
| Harpenden to Landgraaf | 282.30 mi (454.32 km) |
| Harpenden to Landsmeer | 227.47 mi (366.07 km) |
| Harpenden to Langedijk | 225.89 mi (363.53 km) |
| Harpenden to Laren | 239.24 mi (385.02 km) |
| Harpenden to Leek | 298.17 mi (479.85 km) |
| Harpenden to Leerdam | 232.68 mi (374.46 km) |
| Harpenden to Leeuwarden | 275.03 mi (442.62 km) |
| Harpenden to Leiden | 207.35 mi (333.70 km) |
