| La Riviera to Mangualde | 5,549.47 mi (8,931.02 km) |
| La Riviera to Marco de Canavezes | 5,507.27 mi (8,863.09 km) |
| La Riviera to Marinha Grande | 5,544.62 mi (8,923.21 km) |
| La Riviera to Massama | 5,577.84 mi (8,976.67 km) |
| La Riviera to Matosinhos | 5,486.33 mi (8,829.39 km) |
| La Riviera to Mealhada | 5,533.53 mi (8,905.36 km) |
| La Riviera to Melgaco | 5,458.89 mi (8,785.24 km) |
| La Riviera to Melres | 5,503.25 mi (8,856.63 km) |
| La Riviera to Mira | 5,520.27 mi (8,884.01 km) |
| La Riviera to Miranda do Corvo | 5,551.40 mi (8,934.11 km) |
| La Riviera to Mirandela | 5,529.49 mi (8,898.85 km) |
| La Riviera to Mogadouro | 5,554.16 mi (8,938.55 km) |
| La Riviera to Moimenta da Beira | 5,537.26 mi (8,911.35 km) |
| La Riviera to Moita | 5,594.38 mi (9,003.29 km) |
| La Riviera to Moncao | 5,452.91 mi (8,775.61 km) |
