| Myrtle Grove to Mangualde | 4,377.92 mi (7,045.58 km) |
| Myrtle Grove to Marco de Canavezes | 4,346.14 mi (6,994.43 km) |
| Myrtle Grove to Marinha Grande | 4,337.73 mi (6,980.90 km) |
| Myrtle Grove to Massama | 4,342.02 mi (6,987.81 km) |
| Myrtle Grove to Matosinhos | 4,318.91 mi (6,950.61 km) |
| Myrtle Grove to Mealhada | 4,348.34 mi (6,997.98 km) |
| Myrtle Grove to Melgaco | 4,320.82 mi (6,953.68 km) |
| Myrtle Grove to Melres | 4,336.23 mi (6,978.49 km) |
| Myrtle Grove to Mira | 4,333.10 mi (6,973.45 km) |
| Myrtle Grove to Miranda do Corvo | 4,360.32 mi (7,017.26 km) |
| Myrtle Grove to Mirandela | 4,387.39 mi (7,060.82 km) |
| Myrtle Grove to Mogadouro | 4,413.57 mi (7,102.96 km) |
| Myrtle Grove to Moimenta da Beira | 4,377.06 mi (7,044.20 km) |
| Myrtle Grove to Moita | 4,359.27 mi (7,015.57 km) |
| Myrtle Grove to Moncao | 4,311.27 mi (6,938.32 km) |
