| Amarillo to Mangualde | 4,882.42 mi (7,857.49 km) |
| Amarillo to Marco de Canavezes | 4,844.79 mi (7,796.94 km) |
| Amarillo to Marinha Grande | 4,858.45 mi (7,818.92 km) |
| Amarillo to Massama | 4,876.92 mi (7,848.65 km) |
| Amarillo to Matosinhos | 4,819.96 mi (7,756.97 km) |
| Amarillo to Mealhada | 4,858.76 mi (7,819.42 km) |
| Amarillo to Melgaco | 4,807.62 mi (7,737.11 km) |
| Amarillo to Melres | 4,837.51 mi (7,785.22 km) |
| Amarillo to Mira | 4,844.11 mi (7,795.85 km) |
| Amarillo to Miranda do Corvo | 4,873.89 mi (7,843.76 km) |
| Amarillo to Mirandela | 4,877.81 mi (7,850.07 km) |
| Amarillo to Mogadouro | 4,903.90 mi (7,892.07 km) |
| Amarillo to Moimenta da Beira | 4,876.02 mi (7,847.20 km) |
| Amarillo to Moita | 4,894.22 mi (7,876.49 km) |
| Amarillo to Moncao | 4,799.57 mi (7,724.16 km) |
