| Shirley to Mangualde | 830.37 mi (1,336.35 km) |
| Shirley to Marco de Canavezes | 802.56 mi (1,291.59 km) |
| Shirley to Marinha Grande | 909.67 mi (1,463.98 km) |
| Shirley to Massama | 979.68 mi (1,576.65 km) |
| Shirley to Matosinhos | 815.36 mi (1,312.20 km) |
| Shirley to Mealhada | 859.21 mi (1,382.77 km) |
| Shirley to Melgaco | 747.89 mi (1,203.60 km) |
| Shirley to Melres | 815.51 mi (1,312.44 km) |
| Shirley to Mira | 862.49 mi (1,388.05 km) |
| Shirley to Miranda do Corvo | 874.44 mi (1,407.28 km) |
| Shirley to Mirandela | 762.49 mi (1,227.10 km) |
| Shirley to Mogadouro | 762.72 mi (1,227.48 km) |
| Shirley to Moimenta da Beira | 803.52 mi (1,293.15 km) |
| Shirley to Moita | 980.12 mi (1,577.36 km) |
| Shirley to Moncao | 755.75 mi (1,216.26 km) |
