| Bolton to Mangualde | 930.17 mi (1,496.97 km) |
| Bolton to Marco de Canavezes | 896.52 mi (1,442.80 km) |
| Bolton to Marinha Grande | 1,002.93 mi (1,614.06 km) |
| Bolton to Massama | 1,073.94 mi (1,728.34 km) |
| Bolton to Matosinhos | 904.38 mi (1,455.46 km) |
| Bolton to Mealhada | 953.97 mi (1,535.27 km) |
| Bolton to Melgaco | 836.18 mi (1,345.70 km) |
| Bolton to Melres | 907.76 mi (1,460.90 km) |
| Bolton to Mira | 954.62 mi (1,536.31 km) |
| Bolton to Miranda do Corvo | 971.32 mi (1,563.18 km) |
| Bolton to Mirandela | 863.95 mi (1,390.39 km) |
| Bolton to Mogadouro | 869.01 mi (1,398.54 km) |
| Bolton to Moimenta da Beira | 903.14 mi (1,453.46 km) |
| Bolton to Moita | 1,077.01 mi (1,733.29 km) |
| Bolton to Moncao | 842.25 mi (1,355.46 km) |
