| Portlethen to Mangualde | 1,164.57 mi (1,874.19 km) |
| Portlethen to Marco de Canavezes | 1,129.24 mi (1,817.33 km) |
| Portlethen to Marinha Grande | 1,234.63 mi (1,986.95 km) |
| Portlethen to Massama | 1,305.56 mi (2,101.10 km) |
| Portlethen to Matosinhos | 1,135.28 mi (1,827.06 km) |
| Portlethen to Mealhada | 1,186.55 mi (1,909.56 km) |
| Portlethen to Melgaco | 1,067.46 mi (1,717.90 km) |
| Portlethen to Melres | 1,139.80 mi (1,834.33 km) |
| Portlethen to Mira | 1,186.26 mi (1,909.09 km) |
| Portlethen to Miranda do Corvo | 1,204.50 mi (1,938.46 km) |
| Portlethen to Mirandela | 1,099.26 mi (1,769.09 km) |
| Portlethen to Mogadouro | 1,105.61 mi (1,779.31 km) |
| Portlethen to Moimenta da Beira | 1,137.65 mi (1,830.87 km) |
| Portlethen to Moita | 1,309.58 mi (2,107.56 km) |
| Portlethen to Moncao | 1,072.80 mi (1,726.51 km) |
