| Grenada to Mangualde | 4,374.41 mi (7,039.93 km) |
| Grenada to Marco de Canavezes | 4,340.26 mi (6,984.97 km) |
| Grenada to Marinha Grande | 4,340.22 mi (6,984.90 km) |
| Grenada to Massama | 4,350.03 mi (7,000.69 km) |
| Grenada to Matosinhos | 4,313.79 mi (6,942.38 km) |
| Grenada to Mealhada | 4,346.93 mi (6,995.71 km) |
| Grenada to Melgaco | 4,310.36 mi (6,936.85 km) |
| Grenada to Melres | 4,331.29 mi (6,970.54 km) |
| Grenada to Mira | 4,331.84 mi (6,971.43 km) |
| Grenada to Miranda do Corvo | 4,360.17 mi (7,017.02 km) |
| Grenada to Mirandela | 4,378.63 mi (7,046.72 km) |
| Grenada to Mogadouro | 4,404.91 mi (7,089.02 km) |
| Grenada to Moimenta da Beira | 4,371.46 mi (7,035.18 km) |
| Grenada to Moita | 4,367.38 mi (7,028.62 km) |
| Grenada to Moncao | 4,301.32 mi (6,922.31 km) |
