| McDonough to Mangualde | 4,110.16 mi (6,614.66 km) |
| McDonough to Marco de Canavezes | 4,077.68 mi (6,562.39 km) |
| McDonough to Marinha Grande | 4,071.74 mi (6,552.83 km) |
| McDonough to Massama | 4,077.81 mi (6,562.60 km) |
| McDonough to Matosinhos | 4,050.65 mi (6,518.89 km) |
| McDonough to Mealhada | 4,081.18 mi (6,568.02 km) |
| McDonough to Melgaco | 4,051.10 mi (6,519.61 km) |
| McDonough to Melres | 4,068.03 mi (6,546.87 km) |
| McDonough to Mira | 4,065.97 mi (6,543.55 km) |
| McDonough to Miranda do Corvo | 4,093.54 mi (6,587.92 km) |
| McDonough to Mirandela | 4,118.16 mi (6,627.54 km) |
| McDonough to Mogadouro | 4,144.39 mi (6,669.75 km) |
| McDonough to Moimenta da Beira | 4,108.70 mi (6,612.32 km) |
| McDonough to Moita | 4,095.11 mi (6,590.44 km) |
| McDonough to Moncao | 4,041.68 mi (6,504.46 km) |
