| Buffalo Grove to Mangualde | 3,994.51 mi (6,428.55 km) |
| Buffalo Grove to Marco de Canavezes | 3,956.87 mi (6,367.97 km) |
| Buffalo Grove to Marinha Grande | 3,970.92 mi (6,390.58 km) |
| Buffalo Grove to Massama | 3,990.07 mi (6,421.39 km) |
| Buffalo Grove to Matosinhos | 3,932.04 mi (6,328.01 km) |
| Buffalo Grove to Mealhada | 3,970.94 mi (6,390.61 km) |
| Buffalo Grove to Melgaco | 3,919.80 mi (6,308.30 km) |
| Buffalo Grove to Melres | 3,949.59 mi (6,356.26 km) |
| Buffalo Grove to Mira | 3,956.32 mi (6,367.07 km) |
| Buffalo Grove to Miranda do Corvo | 3,986.13 mi (6,415.05 km) |
| Buffalo Grove to Mirandela | 3,989.95 mi (6,421.21 km) |
| Buffalo Grove to Mogadouro | 4,016.06 mi (6,463.22 km) |
| Buffalo Grove to Moimenta da Beira | 3,988.10 mi (6,418.22 km) |
| Buffalo Grove to Moita | 4,007.34 mi (6,449.20 km) |
| Buffalo Grove to Moncao | 3,911.72 mi (6,295.31 km) |
