| Nelson to Mangualde | 949.69 mi (1,528.38 km) |
| Nelson to Marco de Canavezes | 916.11 mi (1,474.34 km) |
| Nelson to Marinha Grande | 1,022.56 mi (1,645.65 km) |
| Nelson to Massama | 1,093.57 mi (1,759.93 km) |
| Nelson to Matosinhos | 924.04 mi (1,487.09 km) |
| Nelson to Mealhada | 973.57 mi (1,566.81 km) |
| Nelson to Melgaco | 855.83 mi (1,377.33 km) |
| Nelson to Melres | 927.38 mi (1,492.48 km) |
| Nelson to Mira | 974.25 mi (1,567.91 km) |
| Nelson to Miranda do Corvo | 990.89 mi (1,594.68 km) |
| Nelson to Mirandela | 883.42 mi (1,421.72 km) |
| Nelson to Mogadouro | 888.38 mi (1,429.71 km) |
| Nelson to Moimenta da Beira | 922.65 mi (1,484.87 km) |
| Nelson to Moita | 1,096.61 mi (1,764.82 km) |
| Nelson to Moncao | 861.91 mi (1,387.12 km) |
