| Austin to Mangualde | 4,893.48 mi (7,875.29 km) |
| Austin to Marco de Canavezes | 4,858.78 mi (7,819.46 km) |
| Austin to Marinha Grande | 4,860.59 mi (7,822.37 km) |
| Austin to Massama | 4,871.37 mi (7,839.71 km) |
| Austin to Matosinhos | 4,832.53 mi (7,777.20 km) |
| Austin to Mealhada | 4,866.50 mi (7,831.87 km) |
| Austin to Melgaco | 4,827.71 mi (7,769.44 km) |
| Austin to Melres | 4,850.06 mi (7,805.41 km) |
| Austin to Mira | 4,851.46 mi (7,807.66 km) |
| Austin to Miranda do Corvo | 4,880.00 mi (7,853.60 km) |
| Austin to Mirandela | 4,896.37 mi (7,879.94 km) |
| Austin to Mogadouro | 4,922.65 mi (7,922.24 km) |
| Austin to Moimenta da Beira | 4,890.02 mi (7,869.72 km) |
| Austin to Moita | 4,888.73 mi (7,867.65 km) |
| Austin to Moncao | 4,818.82 mi (7,755.15 km) |
