| Greendale to Mangualde | 3,971.64 mi (6,391.74 km) |
| Greendale to Marco de Canavezes | 3,933.65 mi (6,330.60 km) |
| Greendale to Marinha Grande | 3,949.24 mi (6,355.69 km) |
| Greendale to Massama | 3,969.38 mi (6,388.11 km) |
| Greendale to Matosinhos | 3,909.03 mi (6,290.97 km) |
| Greendale to Mealhada | 3,948.53 mi (6,354.54 km) |
| Greendale to Melgaco | 3,895.82 mi (6,269.71 km) |
| Greendale to Melres | 3,926.57 mi (6,319.20 km) |
| Greendale to Mira | 3,933.97 mi (6,331.11 km) |
| Greendale to Miranda do Corvo | 3,963.91 mi (6,379.30 km) |
| Greendale to Mirandela | 3,966.11 mi (6,382.84 km) |
| Greendale to Mogadouro | 3,992.17 mi (6,424.78 km) |
| Greendale to Moimenta da Beira | 3,964.85 mi (6,380.81 km) |
| Greendale to Moita | 3,986.64 mi (6,415.87 km) |
| Greendale to Moncao | 3,887.86 mi (6,256.90 km) |
