| Clearfield to Mangualde | 5,066.37 mi (8,153.53 km) |
| Clearfield to Marco de Canavezes | 5,025.04 mi (8,087.01 km) |
| Clearfield to Marinha Grande | 5,057.10 mi (8,138.61 km) |
| Clearfield to Massama | 5,087.18 mi (8,187.02 km) |
| Clearfield to Matosinhos | 5,003.08 mi (8,051.68 km) |
| Clearfield to Mealhada | 5,048.56 mi (8,124.87 km) |
| Clearfield to Melgaco | 4,979.08 mi (8,013.06 km) |
| Clearfield to Melres | 5,020.23 mi (8,079.29 km) |
| Clearfield to Mira | 5,034.91 mi (8,102.91 km) |
| Clearfield to Miranda do Corvo | 5,065.87 mi (8,152.73 km) |
| Clearfield to Mirandela | 5,049.93 mi (8,127.08 km) |
| Clearfield to Mogadouro | 5,075.07 mi (8,167.53 km) |
| Clearfield to Moimenta da Beira | 5,055.46 mi (8,135.98 km) |
| Clearfield to Moita | 5,103.96 mi (8,214.02 km) |
| Clearfield to Moncao | 4,972.58 mi (8,002.59 km) |
