| Pianiga to Marco de Canavezes | 1,052.25 mi (1,693.43 km) |
| Pianiga to Marinha Grande | 1,131.65 mi (1,821.21 km) |
| Pianiga to Massama | 1,180.54 mi (1,899.90 km) |
| Pianiga to Matosinhos | 1,078.59 mi (1,735.82 km) |
| Pianiga to Mealhada | 1,089.30 mi (1,753.06 km) |
| Pianiga to Melgaco | 1,034.30 mi (1,664.55 km) |
| Pianiga to Melres | 1,067.38 mi (1,717.79 km) |
| Pianiga to Mira | 1,101.29 mi (1,772.35 km) |
| Pianiga to Miranda do Corvo | 1,092.36 mi (1,757.98 km) |
| Pianiga to Mirandela | 997.86 mi (1,605.89 km) |
| Pianiga to Mogadouro | 979.71 mi (1,576.69 km) |
| Pianiga to Moimenta da Beira | 1,032.25 mi (1,661.24 km) |
| Pianiga to Moita | 1,170.67 mi (1,884.01 km) |
| Pianiga to Moncao | 1,045.61 mi (1,682.74 km) |
| Pianiga to Montalegre | 1,018.49 mi (1,639.10 km) |
