| Ardea to Marco de Canavezes | 1,070.67 mi (1,723.08 km) |
| Ardea to Marinha Grande | 1,130.02 mi (1,818.59 km) |
| Ardea to Massama | 1,165.56 mi (1,875.79 km) |
| Ardea to Matosinhos | 1,098.96 mi (1,768.60 km) |
| Ardea to Mealhada | 1,095.65 mi (1,763.27 km) |
| Ardea to Melgaco | 1,069.00 mi (1,720.39 km) |
| Ardea to Melres | 1,084.76 mi (1,745.74 km) |
| Ardea to Mira | 1,109.59 mi (1,785.71 km) |
| Ardea to Miranda do Corvo | 1,093.63 mi (1,760.03 km) |
| Ardea to Mirandela | 1,018.08 mi (1,638.44 km) |
| Ardea to Mogadouro | 995.51 mi (1,602.12 km) |
| Ardea to Moimenta da Beira | 1,045.21 mi (1,682.10 km) |
| Ardea to Moita | 1,152.67 mi (1,855.04 km) |
| Ardea to Moncao | 1,080.17 mi (1,738.36 km) |
| Ardea to Montalegre | 1,046.70 mi (1,684.50 km) |
