| North Decatur to Mangualde | 4,103.90 mi (6,604.58 km) |
| North Decatur to Marco de Canavezes | 4,071.19 mi (6,551.94 km) |
| North Decatur to Marinha Grande | 4,066.06 mi (6,543.70 km) |
| North Decatur to Massama | 4,072.68 mi (6,554.35 km) |
| North Decatur to Matosinhos | 4,044.22 mi (6,508.55 km) |
| North Decatur to Mealhada | 4,075.12 mi (6,558.27 km) |
| North Decatur to Melgaco | 4,044.15 mi (6,508.44 km) |
| North Decatur to Melres | 4,061.63 mi (6,536.56 km) |
| North Decatur to Mira | 4,059.93 mi (6,533.82 km) |
| North Decatur to Miranda do Corvo | 4,087.61 mi (6,578.37 km) |
| North Decatur to Mirandela | 4,111.39 mi (6,616.65 km) |
| North Decatur to Mogadouro | 4,137.63 mi (6,658.87 km) |
| North Decatur to Moimenta da Beira | 4,102.24 mi (6,601.91 km) |
| North Decatur to Moita | 4,089.99 mi (6,582.20 km) |
| North Decatur to Moncao | 4,034.79 mi (6,493.36 km) |
