| North Valley Stream to Mangualde | 3,370.49 mi (5,424.29 km) |
| North Valley Stream to Marco de Canavezes | 3,336.33 mi (5,369.30 km) |
| North Valley Stream to Marinha Grande | 3,336.74 mi (5,369.97 km) |
| North Valley Stream to Massama | 3,347.45 mi (5,387.20 km) |
| North Valley Stream to Matosinhos | 3,309.86 mi (5,326.70 km) |
| North Valley Stream to Mealhada | 3,343.11 mi (5,380.22 km) |
| North Valley Stream to Melgaco | 3,306.63 mi (5,321.51 km) |
| North Valley Stream to Melres | 3,327.36 mi (5,354.87 km) |
| North Valley Stream to Mira | 3,328.03 mi (5,355.95 km) |
| North Valley Stream to Miranda do Corvo | 3,356.44 mi (5,401.66 km) |
| North Valley Stream to Mirandela | 3,374.80 mi (5,431.21 km) |
| North Valley Stream to Mogadouro | 3,401.08 mi (5,473.51 km) |
| North Valley Stream to Moimenta da Beira | 3,367.52 mi (5,419.50 km) |
| North Valley Stream to Moita | 3,364.81 mi (5,415.14 km) |
| North Valley Stream to Moncao | 3,297.56 mi (5,306.91 km) |
