| Mablethorpe to Mangualde | 956.41 mi (1,539.20 km) |
| Mablethorpe to Marco de Canavezes | 926.48 mi (1,491.03 km) |
| Mablethorpe to Marinha Grande | 1,033.72 mi (1,663.61 km) |
| Mablethorpe to Massama | 1,104.29 mi (1,777.18 km) |
| Mablethorpe to Matosinhos | 937.54 mi (1,508.82 km) |
| Mablethorpe to Mealhada | 983.63 mi (1,582.99 km) |
| Mablethorpe to Melgaco | 869.49 mi (1,399.31 km) |
| Mablethorpe to Melres | 938.87 mi (1,510.97 km) |
| Mablethorpe to Mira | 985.98 mi (1,586.79 km) |
| Mablethorpe to Miranda do Corvo | 999.64 mi (1,608.76 km) |
| Mablethorpe to Mirandela | 888.84 mi (1,430.44 km) |
| Mablethorpe to Mogadouro | 890.62 mi (1,433.32 km) |
| Mablethorpe to Moimenta da Beira | 929.41 mi (1,495.74 km) |
| Mablethorpe to Moita | 1,105.63 mi (1,779.34 km) |
| Mablethorpe to Moncao | 876.70 mi (1,410.92 km) |
