| Newcastle to Mangualde | 1,032.51 mi (1,661.66 km) |
| Newcastle to Marco de Canavezes | 998.85 mi (1,607.49 km) |
| Newcastle to Marinha Grande | 1,105.23 mi (1,778.70 km) |
| Newcastle to Massama | 1,176.24 mi (1,892.98 km) |
| Newcastle to Matosinhos | 1,006.62 mi (1,620.00 km) |
| Newcastle to Mealhada | 1,056.30 mi (1,699.95 km) |
| Newcastle to Melgaco | 938.43 mi (1,510.26 km) |
| Newcastle to Melres | 1,010.07 mi (1,625.54 km) |
| Newcastle to Mira | 1,056.91 mi (1,700.93 km) |
| Newcastle to Miranda do Corvo | 1,073.66 mi (1,727.89 km) |
| Newcastle to Mirandela | 966.25 mi (1,555.02 km) |
| Newcastle to Mogadouro | 971.18 mi (1,562.96 km) |
| Newcastle to Moimenta da Beira | 1,005.47 mi (1,618.15 km) |
| Newcastle to Moita | 1,179.35 mi (1,897.98 km) |
| Newcastle to Moncao | 944.44 mi (1,519.94 km) |
