| Viera West to Mangualde | 4,128.16 mi (6,643.63 km) |
| Viera West to Marco de Canavezes | 4,099.65 mi (6,597.75 km) |
| Viera West to Marinha Grande | 4,080.81 mi (6,567.42 km) |
| Viera West to Massama | 4,078.27 mi (6,563.34 km) |
| Viera West to Matosinhos | 4,071.69 mi (6,552.75 km) |
| Viera West to Mealhada | 4,096.20 mi (6,592.19 km) |
| Viera West to Melgaco | 4,080.40 mi (6,566.77 km) |
| Viera West to Melres | 4,088.64 mi (6,580.03 km) |
| Viera West to Mira | 4,080.90 mi (6,567.57 km) |
| Viera West to Miranda do Corvo | 4,106.49 mi (6,608.76 km) |
| Viera West to Mirandela | 4,144.21 mi (6,669.46 km) |
| Viera West to Mogadouro | 4,170.03 mi (6,711.02 km) |
| Viera West to Moimenta da Beira | 4,129.96 mi (6,646.54 km) |
| Viera West to Moita | 4,095.25 mi (6,590.67 km) |
| Viera West to Moncao | 4,070.29 mi (6,550.50 km) |
