| Ada to Mangualde | 1,441.97 mi (2,320.62 km) |
| Ada to Marco de Canavezes | 1,445.04 mi (2,325.56 km) |
| Ada to Marinha Grande | 1,522.81 mi (2,450.72 km) |
| Ada to Massama | 1,569.83 mi (2,526.39 km) |
| Ada to Matosinhos | 1,471.51 mi (2,368.16 km) |
| Ada to Mealhada | 1,481.25 mi (2,383.83 km) |
| Ada to Melgaco | 1,427.41 mi (2,297.20 km) |
| Ada to Melres | 1,460.14 mi (2,349.86 km) |
| Ada to Mira | 1,493.45 mi (2,403.47 km) |
| Ada to Miranda do Corvo | 1,483.75 mi (2,387.87 km) |
| Ada to Mirandela | 1,390.64 mi (2,238.03 km) |
| Ada to Mogadouro | 1,372.18 mi (2,208.31 km) |
| Ada to Moimenta da Beira | 1,424.63 mi (2,292.72 km) |
| Ada to Moita | 1,559.35 mi (2,509.53 km) |
| Ada to Moncao | 1,438.71 mi (2,315.39 km) |
