| Buffalo to Mangualde | 3,554.29 mi (5,720.08 km) |
| Buffalo to Marco de Canavezes | 3,517.88 mi (5,661.48 km) |
| Buffalo to Marinha Grande | 3,526.92 mi (5,676.04 km) |
| Buffalo to Massama | 3,543.11 mi (5,702.08 km) |
| Buffalo to Matosinhos | 3,492.38 mi (5,620.44 km) |
| Buffalo to Mealhada | 3,529.26 mi (5,679.79 km) |
| Buffalo to Melgaco | 3,483.54 mi (5,606.21 km) |
| Buffalo to Melres | 3,509.95 mi (5,648.72 km) |
| Buffalo to Mira | 3,514.44 mi (5,655.94 km) |
| Buffalo to Miranda do Corvo | 3,543.79 mi (5,703.18 km) |
| Buffalo to Mirandela | 3,553.08 mi (5,718.13 km) |
| Buffalo to Mogadouro | 3,579.31 mi (5,760.34 km) |
| Buffalo to Moimenta da Beira | 3,549.15 mi (5,711.81 km) |
| Buffalo to Moita | 3,560.44 mi (5,729.98 km) |
| Buffalo to Moncao | 3,475.06 mi (5,592.57 km) |
