| Portalegre to Mangualde | 90.81 mi (146.14 km) |
| Portalegre to Marco de Canavezes | 134.64 mi (216.68 km) |
| Portalegre to Marinha Grande | 86.18 mi (138.70 km) |
| Portalegre to Massama | 106.96 mi (172.13 km) |
| Portalegre to Matosinhos | 145.64 mi (234.39 km) |
| Portalegre to Mealhada | 91.84 mi (147.80 km) |
| Portalegre to Melgaco | 198.51 mi (319.48 km) |
| Portalegre to Melres | 131.58 mi (211.75 km) |
| Portalegre to Mira | 104.05 mi (167.44 km) |
| Portalegre to Miranda do Corvo | 72.82 mi (117.19 km) |
| Portalegre to Mirandela | 150.34 mi (241.96 km) |
| Portalegre to Mogadouro | 144.13 mi (231.95 km) |
| Portalegre to Moimenta da Beira | 115.37 mi (185.67 km) |
| Portalegre to Moita | 95.92 mi (154.37 km) |
| Portalegre to Moncao | 198.44 mi (319.35 km) |
