| Greeneville to Mangualde | 3,950.20 mi (6,357.24 km) |
| Greeneville to Marco de Canavezes | 3,916.60 mi (6,303.16 km) |
| Greeneville to Marinha Grande | 3,914.70 mi (6,300.10 km) |
| Greeneville to Massama | 3,923.52 mi (6,314.29 km) |
| Greeneville to Matosinhos | 3,889.93 mi (6,260.24 km) |
| Greeneville to Mealhada | 3,922.24 mi (6,312.23 km) |
| Greeneville to Melgaco | 3,887.88 mi (6,256.94 km) |
| Greeneville to Melres | 3,907.40 mi (6,288.36 km) |
| Greeneville to Mira | 3,907.11 mi (6,287.88 km) |
| Greeneville to Miranda do Corvo | 3,935.21 mi (6,333.11 km) |
| Greeneville to Mirandela | 3,955.73 mi (6,366.14 km) |
| Greeneville to Mogadouro | 3,982.00 mi (6,408.42 km) |
| Greeneville to Moimenta da Beira | 3,947.75 mi (6,353.29 km) |
| Greeneville to Moita | 3,940.86 mi (6,342.21 km) |
| Greeneville to Moncao | 3,878.70 mi (6,242.17 km) |
