| Letchworth to Los Llanos de Aridane | 1,850.26 mi (2,977.70 km) |
| Letchworth to Los Palacios y Villafranca | 1,060.50 mi (1,706.71 km) |
| Letchworth to Luanco | 632.70 mi (1,018.23 km) |
| Letchworth to Lucena | 1,028.22 mi (1,654.77 km) |
| Letchworth to Lugo | 706.37 mi (1,136.79 km) |
| Letchworth to Lumbreras | 998.90 mi (1,607.57 km) |
| Letchworth to Madrid | 815.64 mi (1,312.64 km) |
| Letchworth to Madridejos | 878.77 mi (1,414.24 km) |
| Letchworth to Mahon | 862.28 mi (1,387.71 km) |
| Letchworth to Mairena del Alcor | 1,044.37 mi (1,680.75 km) |
| Letchworth to Mairena del Aljarafe | 1,050.87 mi (1,691.22 km) |
| Letchworth to Majadahonda | 813.50 mi (1,309.21 km) |
| Letchworth to Malaga | 1,073.94 mi (1,728.34 km) |
| Letchworth to Malgrat de Mar | 727.44 mi (1,170.71 km) |
| Letchworth to Manacor | 872.92 mi (1,404.83 km) |
