| Frederick to Mangualde | 3,584.67 mi (5,768.96 km) |
| Frederick to Marco de Canavezes | 3,550.48 mi (5,713.95 km) |
| Frederick to Marinha Grande | 3,550.87 mi (5,714.57 km) |
| Frederick to Massama | 3,561.41 mi (5,731.53 km) |
| Frederick to Matosinhos | 3,524.02 mi (5,671.36 km) |
| Frederick to Mealhada | 3,557.28 mi (5,724.89 km) |
| Frederick to Melgaco | 3,520.69 mi (5,666.01 km) |
| Frederick to Melres | 3,541.52 mi (5,699.53 km) |
| Frederick to Mira | 3,542.20 mi (5,700.63 km) |
| Frederick to Miranda do Corvo | 3,570.60 mi (5,746.32 km) |
| Frederick to Mirandela | 3,588.90 mi (5,775.77 km) |
| Frederick to Mogadouro | 3,615.18 mi (5,818.07 km) |
| Frederick to Moimenta da Beira | 3,581.68 mi (5,764.16 km) |
| Frederick to Moita | 3,578.77 mi (5,759.47 km) |
| Frederick to Moncao | 3,511.63 mi (5,651.43 km) |
