| Harpenden to Los Llanos de Aridane | 1,838.23 mi (2,958.34 km) |
| Harpenden to Los Palacios y Villafranca | 1,048.36 mi (1,687.18 km) |
| Harpenden to Luanco | 620.44 mi (998.51 km) |
| Harpenden to Lucena | 1,016.24 mi (1,635.48 km) |
| Harpenden to Lugo | 694.19 mi (1,117.19 km) |
| Harpenden to Lumbreras | 987.41 mi (1,589.08 km) |
| Harpenden to Madrid | 803.66 mi (1,293.37 km) |
| Harpenden to Madridejos | 866.86 mi (1,395.08 km) |
| Harpenden to Mahon | 853.12 mi (1,372.97 km) |
| Harpenden to Mairena del Alcor | 1,032.24 mi (1,661.23 km) |
| Harpenden to Mairena del Aljarafe | 1,038.72 mi (1,671.65 km) |
| Harpenden to Majadahonda | 801.50 mi (1,289.89 km) |
| Harpenden to Malaga | 1,061.98 mi (1,709.09 km) |
| Harpenden to Malgrat de Mar | 717.76 mi (1,155.12 km) |
| Harpenden to Manacor | 863.22 mi (1,389.23 km) |
