| Diamond Bar to Mangualde | 5,630.00 mi (9,060.60 km) |
| Diamond Bar to Marco de Canavezes | 5,589.39 mi (8,995.25 km) |
| Diamond Bar to Marinha Grande | 5,617.22 mi (9,040.04 km) |
| Diamond Bar to Massama | 5,644.44 mi (9,083.84 km) |
| Diamond Bar to Matosinhos | 5,566.73 mi (8,958.78 km) |
| Diamond Bar to Mealhada | 5,610.79 mi (9,029.69 km) |
| Diamond Bar to Melgaco | 5,545.22 mi (8,924.16 km) |
| Diamond Bar to Melres | 5,584.02 mi (8,986.61 km) |
| Diamond Bar to Mira | 5,596.87 mi (9,007.29 km) |
| Diamond Bar to Miranda do Corvo | 5,627.63 mi (9,056.80 km) |
| Diamond Bar to Mirandela | 5,616.11 mi (9,038.26 km) |
| Diamond Bar to Mogadouro | 5,641.52 mi (9,079.14 km) |
| Diamond Bar to Moimenta da Beira | 5,620.07 mi (9,044.63 km) |
| Diamond Bar to Moita | 5,661.40 mi (9,111.14 km) |
| Diamond Bar to Moncao | 5,538.37 mi (8,913.14 km) |
