| Ainring to Marco de Canavezes | 1,131.28 mi (1,820.62 km) |
| Ainring to Marinha Grande | 1,219.44 mi (1,962.51 km) |
| Ainring to Massama | 1,274.18 mi (2,050.59 km) |
| Ainring to Matosinhos | 1,155.85 mi (1,860.15 km) |
| Ainring to Mealhada | 1,173.90 mi (1,889.21 km) |
| Ainring to Melgaco | 1,104.71 mi (1,777.85 km) |
| Ainring to Melres | 1,146.58 mi (1,845.25 km) |
| Ainring to Mira | 1,184.54 mi (1,906.33 km) |
| Ainring to Miranda do Corvo | 1,179.56 mi (1,898.32 km) |
| Ainring to Mirandela | 1,077.46 mi (1,734.00 km) |
| Ainring to Mogadouro | 1,062.26 mi (1,709.55 km) |
| Ainring to Moimenta da Beira | 1,114.80 mi (1,794.09 km) |
| Ainring to Moita | 1,266.03 mi (2,037.47 km) |
| Ainring to Moncao | 1,115.76 mi (1,795.65 km) |
| Ainring to Montalegre | 1,093.05 mi (1,759.09 km) |
