| Brentwood to Mangualde | 852.34 mi (1,371.71 km) |
| Brentwood to Marco de Canavezes | 824.74 mi (1,327.29 km) |
| Brentwood to Marinha Grande | 931.82 mi (1,499.62 km) |
| Brentwood to Massama | 1,001.77 mi (1,612.20 km) |
| Brentwood to Matosinhos | 837.67 mi (1,348.10 km) |
| Brentwood to Mealhada | 881.34 mi (1,418.38 km) |
| Brentwood to Melgaco | 770.24 mi (1,239.58 km) |
| Brentwood to Melres | 837.74 mi (1,348.21 km) |
| Brentwood to Mira | 884.70 mi (1,423.78 km) |
| Brentwood to Miranda do Corvo | 896.49 mi (1,442.77 km) |
| Brentwood to Mirandela | 784.44 mi (1,262.44 km) |
| Brentwood to Mogadouro | 784.48 mi (1,262.49 km) |
| Brentwood to Moimenta da Beira | 825.52 mi (1,328.54 km) |
| Brentwood to Moita | 1,002.13 mi (1,612.77 km) |
| Brentwood to Moncao | 778.14 mi (1,252.29 km) |
