| Brent to Mangualde | 4,373.11 mi (7,037.84 km) |
| Brent to Marco de Canavezes | 4,341.32 mi (6,986.67 km) |
| Brent to Marinha Grande | 4,332.95 mi (6,973.21 km) |
| Brent to Massama | 4,337.28 mi (6,980.18 km) |
| Brent to Matosinhos | 4,314.09 mi (6,942.85 km) |
| Brent to Mealhada | 4,343.55 mi (6,990.26 km) |
| Brent to Melgaco | 4,315.97 mi (6,945.88 km) |
| Brent to Melres | 4,331.42 mi (6,970.74 km) |
| Brent to Mira | 4,328.31 mi (6,965.74 km) |
| Brent to Miranda do Corvo | 4,355.53 mi (7,009.55 km) |
| Brent to Mirandela | 4,382.55 mi (7,053.04 km) |
| Brent to Mogadouro | 4,408.74 mi (7,095.17 km) |
| Brent to Moimenta da Beira | 4,372.24 mi (7,036.45 km) |
| Brent to Moita | 4,354.54 mi (7,007.95 km) |
| Brent to Moncao | 4,306.43 mi (6,930.53 km) |
