| Mount Prospect to Mangualde | 3,996.77 mi (6,432.18 km) |
| Mount Prospect to Marco de Canavezes | 3,959.18 mi (6,371.68 km) |
| Mount Prospect to Marinha Grande | 3,973.01 mi (6,393.94 km) |
| Mount Prospect to Massama | 3,992.01 mi (6,424.52 km) |
| Mount Prospect to Matosinhos | 3,934.32 mi (6,331.67 km) |
| Mount Prospect to Mealhada | 3,973.13 mi (6,394.14 km) |
| Mount Prospect to Melgaco | 3,922.21 mi (6,312.19 km) |
| Mount Prospect to Melres | 3,951.87 mi (6,359.92 km) |
| Mount Prospect to Mira | 3,958.50 mi (6,370.58 km) |
| Mount Prospect to Miranda do Corvo | 3,988.29 mi (6,418.53 km) |
| Mount Prospect to Mirandela | 3,992.35 mi (6,425.06 km) |
| Mount Prospect to Mogadouro | 4,018.46 mi (6,467.09 km) |
| Mount Prospect to Moimenta da Beira | 3,990.41 mi (6,421.94 km) |
| Mount Prospect to Moita | 4,009.29 mi (6,452.33 km) |
| Mount Prospect to Moncao | 3,914.12 mi (6,299.17 km) |
