| Negresti-Oas to Mangualde | 1,610.58 mi (2,591.98 km) |
| Negresti-Oas to Marco de Canavezes | 1,609.74 mi (2,590.62 km) |
| Negresti-Oas to Marinha Grande | 1,693.45 mi (2,725.34 km) |
| Negresti-Oas to Massama | 1,744.41 mi (2,807.36 km) |
| Negresti-Oas to Matosinhos | 1,635.15 mi (2,631.51 km) |
| Negresti-Oas to Mealhada | 1,649.66 mi (2,654.87 km) |
| Negresti-Oas to Melgaco | 1,586.47 mi (2,553.18 km) |
| Negresti-Oas to Melres | 1,625.00 mi (2,615.18 km) |
| Negresti-Oas to Mira | 1,661.04 mi (2,673.19 km) |
| Negresti-Oas to Miranda do Corvo | 1,653.84 mi (2,661.60 km) |
| Negresti-Oas to Mirandela | 1,555.51 mi (2,503.36 km) |
| Negresti-Oas to Mogadouro | 1,538.84 mi (2,476.52 km) |
| Negresti-Oas to Moimenta da Beira | 1,591.51 mi (2,561.28 km) |
| Negresti-Oas to Moita | 1,734.98 mi (2,792.19 km) |
| Negresti-Oas to Moncao | 1,597.64 mi (2,571.15 km) |
