| Benbrook to Mangualde | 4,782.90 mi (7,697.33 km) |
| Benbrook to Marco de Canavezes | 4,747.29 mi (7,640.02 km) |
| Benbrook to Marinha Grande | 4,752.67 mi (7,648.68 km) |
| Benbrook to Massama | 4,765.82 mi (7,669.85 km) |
| Benbrook to Matosinhos | 4,721.42 mi (7,598.40 km) |
| Benbrook to Mealhada | 4,756.89 mi (7,655.47 km) |
| Benbrook to Melgaco | 4,714.37 mi (7,587.05 km) |
| Benbrook to Melres | 4,738.98 mi (7,626.65 km) |
| Benbrook to Mira | 4,741.94 mi (7,631.42 km) |
| Benbrook to Miranda do Corvo | 4,770.90 mi (7,678.01 km) |
| Benbrook to Mirandela | 4,783.57 mi (7,698.41 km) |
| Benbrook to Mogadouro | 4,809.83 mi (7,740.68 km) |
| Benbrook to Moimenta da Beira | 4,778.56 mi (7,690.35 km) |
| Benbrook to Moita | 4,783.19 mi (7,697.80 km) |
| Benbrook to Moncao | 4,705.72 mi (7,573.13 km) |
