| San Salvo to Marco de Canavezes | 1,179.95 mi (1,898.94 km) |
| San Salvo to Marinha Grande | 1,242.02 mi (1,998.84 km) |
| San Salvo to Massama | 1,279.00 mi (2,058.35 km) |
| San Salvo to Matosinhos | 1,208.06 mi (1,944.19 km) |
| San Salvo to Mealhada | 1,206.61 mi (1,941.85 km) |
| San Salvo to Melgaco | 1,175.79 mi (1,892.26 km) |
| San Salvo to Melres | 1,194.23 mi (1,921.93 km) |
| San Salvo to Mira | 1,220.35 mi (1,963.97 km) |
| San Salvo to Miranda do Corvo | 1,205.19 mi (1,939.57 km) |
| San Salvo to Mirandela | 1,126.87 mi (1,813.53 km) |
| San Salvo to Mogadouro | 1,104.84 mi (1,778.07 km) |
| San Salvo to Moimenta da Beira | 1,155.14 mi (1,859.01 km) |
| San Salvo to Moita | 1,266.35 mi (2,037.99 km) |
| San Salvo to Moncao | 1,187.03 mi (1,910.34 km) |
| San Salvo to Montalegre | 1,154.42 mi (1,857.86 km) |
