| Abertawe to Mangualde | 782.20 mi (1,258.83 km) |
| Abertawe to Marco de Canavezes | 747.81 mi (1,203.49 km) |
| Abertawe to Marinha Grande | 853.95 mi (1,374.30 km) |
| Abertawe to Massama | 924.96 mi (1,488.59 km) |
| Abertawe to Matosinhos | 755.16 mi (1,215.31 km) |
| Abertawe to Mealhada | 805.24 mi (1,295.91 km) |
| Abertawe to Melgaco | 687.02 mi (1,105.65 km) |
| Abertawe to Melres | 758.84 mi (1,221.24 km) |
| Abertawe to Mira | 805.60 mi (1,296.49 km) |
| Abertawe to Miranda do Corvo | 822.82 mi (1,324.20 km) |
| Abertawe to Mirandela | 716.47 mi (1,153.04 km) |
| Abertawe to Mogadouro | 722.47 mi (1,162.70 km) |
| Abertawe to Moimenta da Beira | 755.21 mi (1,215.40 km) |
| Abertawe to Moita | 928.33 mi (1,494.00 km) |
| Abertawe to Moncao | 692.92 mi (1,115.15 km) |
