| Viera East to Mangualde | 4,126.40 mi (6,640.79 km) |
| Viera East to Marco de Canavezes | 4,097.89 mi (6,594.91 km) |
| Viera East to Marinha Grande | 4,079.04 mi (6,564.59 km) |
| Viera East to Massama | 4,076.51 mi (6,560.50 km) |
| Viera East to Matosinhos | 4,069.92 mi (6,549.91 km) |
| Viera East to Mealhada | 4,094.43 mi (6,589.35 km) |
| Viera East to Melgaco | 4,078.63 mi (6,563.93 km) |
| Viera East to Melres | 4,086.87 mi (6,577.19 km) |
| Viera East to Mira | 4,079.13 mi (6,564.73 km) |
| Viera East to Miranda do Corvo | 4,104.73 mi (6,605.93 km) |
| Viera East to Mirandela | 4,142.44 mi (6,666.62 km) |
| Viera East to Mogadouro | 4,168.27 mi (6,708.18 km) |
| Viera East to Moimenta da Beira | 4,128.20 mi (6,643.70 km) |
| Viera East to Moita | 4,093.49 mi (6,587.84 km) |
| Viera East to Moncao | 4,068.52 mi (6,547.66 km) |
