| Saco to Mangualde | 3,144.70 mi (5,060.91 km) |
| Saco to Marco de Canavezes | 3,109.32 mi (5,003.97 km) |
| Saco to Marinha Grande | 3,114.46 mi (5,012.24 km) |
| Saco to Massama | 3,128.41 mi (5,034.69 km) |
| Saco to Matosinhos | 3,083.34 mi (4,962.16 km) |
| Saco to Mealhada | 3,118.57 mi (5,018.85 km) |
| Saco to Melgaco | 3,077.24 mi (4,952.33 km) |
| Saco to Melres | 3,100.89 mi (4,990.40 km) |
| Saco to Mira | 3,103.62 mi (4,994.80 km) |
| Saco to Miranda do Corvo | 3,132.57 mi (5,041.39 km) |
| Saco to Mirandela | 3,146.15 mi (5,063.24 km) |
| Saco to Mogadouro | 3,172.42 mi (5,105.52 km) |
| Saco to Moimenta da Beira | 3,140.59 mi (5,054.28 km) |
| Saco to Moita | 3,145.77 mi (5,062.62 km) |
| Saco to Moncao | 3,068.45 mi (4,938.20 km) |
