| Somerset to Mangualde | 3,413.54 mi (5,493.57 km) |
| Somerset to Marco de Canavezes | 3,379.33 mi (5,438.50 km) |
| Somerset to Marinha Grande | 3,379.91 mi (5,439.45 km) |
| Somerset to Massama | 3,390.70 mi (5,456.81 km) |
| Somerset to Matosinhos | 3,352.87 mi (5,395.93 km) |
| Somerset to Mealhada | 3,386.21 mi (5,449.57 km) |
| Somerset to Melgaco | 3,349.51 mi (5,390.52 km) |
| Somerset to Melres | 3,370.38 mi (5,424.10 km) |
| Somerset to Mira | 3,371.13 mi (5,425.31 km) |
| Somerset to Miranda do Corvo | 3,399.56 mi (5,471.06 km) |
| Somerset to Mirandela | 3,417.72 mi (5,500.29 km) |
| Somerset to Mogadouro | 3,444.00 mi (5,542.59 km) |
| Somerset to Moimenta da Beira | 3,410.52 mi (5,488.71 km) |
| Somerset to Moita | 3,408.06 mi (5,484.75 km) |
| Somerset to Moncao | 3,340.45 mi (5,375.94 km) |
