| Sunninghill to Mangualde | 819.41 mi (1,318.71 km) |
| Sunninghill to Marco de Canavezes | 790.59 mi (1,272.33 km) |
| Sunninghill to Marinha Grande | 897.81 mi (1,444.89 km) |
| Sunninghill to Massama | 968.10 mi (1,558.00 km) |
| Sunninghill to Matosinhos | 802.66 mi (1,291.75 km) |
| Sunninghill to Mealhada | 847.49 mi (1,363.91 km) |
| Sunninghill to Melgaco | 734.91 mi (1,182.72 km) |
| Sunninghill to Melres | 803.31 mi (1,292.80 km) |
| Sunninghill to Mira | 850.37 mi (1,368.53 km) |
| Sunninghill to Miranda do Corvo | 863.09 mi (1,389.01 km) |
| Sunninghill to Mirandela | 751.65 mi (1,209.66 km) |
| Sunninghill to Mogadouro | 752.71 mi (1,211.37 km) |
| Sunninghill to Moimenta da Beira | 792.47 mi (1,275.36 km) |
| Sunninghill to Moita | 968.96 mi (1,559.39 km) |
| Sunninghill to Moncao | 742.52 mi (1,194.97 km) |
