| Letchworth to Melzo | 626.33 mi (1,007.97 km) |
| Letchworth to Mendicino | 1,178.50 mi (1,896.62 km) |
| Letchworth to Menfi | 1,181.10 mi (1,900.80 km) |
| Letchworth to Mentana | 914.95 mi (1,472.47 km) |
| Letchworth to Merano | 629.40 mi (1,012.93 km) |
| Letchworth to Merate | 616.49 mi (992.14 km) |
| Letchworth to Mercato San Severino | 1,049.14 mi (1,688.43 km) |
| Letchworth to Mercogliano | 1,040.73 mi (1,674.89 km) |
| Letchworth to Mesagne | 1,161.65 mi (1,869.50 km) |
| Letchworth to Messina | 1,219.25 mi (1,962.20 km) |
| Letchworth to Mestre | 722.03 mi (1,162.00 km) |
| Letchworth to Mestrino | 707.36 mi (1,138.38 km) |
| Letchworth to Milan | 620.92 mi (999.28 km) |
| Letchworth to Milazzo | 1,208.44 mi (1,944.79 km) |
| Letchworth to Minerbio | 738.56 mi (1,188.60 km) |
