| The Dalles to Mangualde | 5,202.06 mi (8,371.91 km) |
| The Dalles to Marco de Canavezes | 5,158.68 mi (8,302.09 km) |
| The Dalles to Marinha Grande | 5,204.81 mi (8,376.33 km) |
| The Dalles to Massama | 5,243.57 mi (8,438.71 km) |
| The Dalles to Matosinhos | 5,139.53 mi (8,271.28 km) |
| The Dalles to Mealhada | 5,189.35 mi (8,351.45 km) |
| The Dalles to Melgaco | 5,106.72 mi (8,218.47 km) |
| The Dalles to Melres | 5,155.98 mi (8,297.74 km) |
| The Dalles to Mira | 5,176.82 mi (8,331.28 km) |
| The Dalles to Miranda do Corvo | 5,208.04 mi (8,381.53 km) |
| The Dalles to Mirandela | 5,176.49 mi (8,330.75 km) |
| The Dalles to Mogadouro | 5,200.28 mi (8,369.05 km) |
| The Dalles to Moimenta da Beira | 5,187.77 mi (8,348.91 km) |
| The Dalles to Moita | 5,259.56 mi (8,464.45 km) |
| The Dalles to Moncao | 5,101.60 mi (8,210.24 km) |
