| Le Portel to Marco de Canavezes | 805.49 mi (1,296.30 km) |
| Le Portel to Marinha Grande | 911.53 mi (1,466.97 km) |
| Le Portel to Massama | 980.18 mi (1,577.45 km) |
| Le Portel to Matosinhos | 820.90 mi (1,321.11 km) |
| Le Portel to Mealhada | 860.86 mi (1,385.42 km) |
| Le Portel to Melgaco | 754.94 mi (1,214.95 km) |
| Le Portel to Melres | 819.23 mi (1,318.42 km) |
| Le Portel to Mira | 865.60 mi (1,393.05 km) |
| Le Portel to Miranda do Corvo | 874.66 mi (1,407.64 km) |
| Le Portel to Mirandela | 761.65 mi (1,225.76 km) |
| Le Portel to Mogadouro | 758.95 mi (1,221.41 km) |
| Le Portel to Moimenta da Beira | 803.13 mi (1,292.52 km) |
| Le Portel to Moita | 979.11 mi (1,575.72 km) |
| Le Portel to Moncao | 763.67 mi (1,229.00 km) |
| Le Portel to Montalegre | 758.22 mi (1,220.24 km) |
