| Sussex to Mangualde | 3,975.24 mi (6,397.54 km) |
| Sussex to Marco de Canavezes | 3,937.13 mi (6,336.20 km) |
| Sussex to Marinha Grande | 3,953.27 mi (6,362.18 km) |
| Sussex to Massama | 3,973.76 mi (6,395.15 km) |
| Sussex to Matosinhos | 3,912.59 mi (6,296.70 km) |
| Sussex to Mealhada | 3,952.29 mi (6,360.60 km) |
| Sussex to Melgaco | 3,899.02 mi (6,274.87 km) |
| Sussex to Melres | 3,930.12 mi (6,324.92 km) |
| Sussex to Mira | 3,937.76 mi (6,337.21 km) |
| Sussex to Miranda do Corvo | 3,967.75 mi (6,385.47 km) |
| Sussex to Mirandela | 3,969.37 mi (6,388.08 km) |
| Sussex to Mogadouro | 3,995.41 mi (6,429.99 km) |
| Sussex to Moimenta da Beira | 3,968.32 mi (6,386.39 km) |
| Sussex to Moita | 3,991.00 mi (6,422.90 km) |
| Sussex to Moncao | 3,891.11 mi (6,262.13 km) |
