| Saltcoats to Mangualde | 1,047.30 mi (1,685.47 km) |
| Saltcoats to Marco de Canavezes | 1,010.05 mi (1,625.52 km) |
| Saltcoats to Marinha Grande | 1,113.85 mi (1,792.57 km) |
| Saltcoats to Massama | 1,184.43 mi (1,906.15 km) |
| Saltcoats to Matosinhos | 1,014.10 mi (1,632.03 km) |
| Saltcoats to Mealhada | 1,066.92 mi (1,717.05 km) |
| Saltcoats to Melgaco | 947.00 mi (1,524.05 km) |
| Saltcoats to Melres | 1,019.79 mi (1,641.20 km) |
| Saltcoats to Mira | 1,065.60 mi (1,714.92 km) |
| Saltcoats to Miranda do Corvo | 1,085.51 mi (1,746.97 km) |
| Saltcoats to Mirandela | 983.61 mi (1,582.97 km) |
| Saltcoats to Mogadouro | 992.00 mi (1,596.47 km) |
| Saltcoats to Moimenta da Beira | 1,020.66 mi (1,642.60 km) |
| Saltcoats to Moita | 1,189.45 mi (1,914.24 km) |
| Saltcoats to Moncao | 951.59 mi (1,531.44 km) |
