| Soure to Mangualde | 59.81 mi (96.25 km) |
| Soure to Marco de Canavezes | 82.30 mi (132.45 km) |
| Soure to Marinha Grande | 26.12 mi (42.04 km) |
| Soure to Massama | 95.69 mi (154.00 km) |
| Soure to Matosinhos | 78.38 mi (126.14 km) |
| Soure to Mealhada | 24.98 mi (40.20 km) |
| Soure to Melgaco | 144.07 mi (231.85 km) |
| Soure to Melres | 71.31 mi (114.76 km) |
| Soure to Mira | 27.00 mi (43.46 km) |
| Soure to Miranda do Corvo | 16.23 mi (26.12 km) |
| Soure to Mirandela | 124.91 mi (201.03 km) |
| Soure to Mogadouro | 133.95 mi (215.57 km) |
| Soure to Moimenta da Beira | 83.64 mi (134.60 km) |
| Soure to Moita | 98.52 mi (158.55 km) |
| Soure to Moncao | 140.02 mi (225.35 km) |
