| Grimes to Mangualde | 4,272.49 mi (6,875.91 km) |
| Grimes to Marco de Canavezes | 4,234.02 mi (6,814.00 km) |
| Grimes to Marinha Grande | 4,251.65 mi (6,842.38 km) |
| Grimes to Massama | 4,272.95 mi (6,876.64 km) |
| Grimes to Matosinhos | 4,209.71 mi (6,774.87 km) |
| Grimes to Mealhada | 4,250.00 mi (6,839.71 km) |
| Grimes to Melgaco | 4,195.07 mi (6,751.32 km) |
| Grimes to Melres | 4,227.22 mi (6,803.06 km) |
| Grimes to Mira | 4,235.53 mi (6,816.43 km) |
| Grimes to Miranda do Corvo | 4,265.64 mi (6,864.88 km) |
| Grimes to Mirandela | 4,265.55 mi (6,864.75 km) |
| Grimes to Mogadouro | 4,291.53 mi (6,906.56 km) |
| Grimes to Moimenta da Beira | 4,265.17 mi (6,864.13 km) |
| Grimes to Moita | 4,290.16 mi (6,904.35 km) |
| Grimes to Moncao | 4,187.29 mi (6,738.80 km) |
