| Alpen to Marco de Canavezes | 998.41 mi (1,606.78 km) |
| Alpen to Marinha Grande | 1,101.77 mi (1,773.13 km) |
| Alpen to Massama | 1,167.90 mi (1,879.55 km) |
| Alpen to Matosinhos | 1,016.61 mi (1,636.07 km) |
| Alpen to Mealhada | 1,051.49 mi (1,692.20 km) |
| Alpen to Melgaco | 953.17 mi (1,533.98 km) |
| Alpen to Melres | 1,012.87 mi (1,630.06 km) |
| Alpen to Mira | 1,057.93 mi (1,702.57 km) |
| Alpen to Miranda do Corvo | 1,063.33 mi (1,711.27 km) |
| Alpen to Mirandela | 950.74 mi (1,530.06 km) |
| Alpen to Mogadouro | 944.35 mi (1,519.78 km) |
| Alpen to Moimenta da Beira | 992.08 mi (1,596.60 km) |
| Alpen to Moita | 1,164.85 mi (1,874.65 km) |
| Alpen to Moncao | 962.69 mi (1,549.30 km) |
| Alpen to Montalegre | 952.53 mi (1,532.95 km) |
