| Widnes to Mangualde | 912.33 mi (1,468.26 km) |
| Widnes to Marco de Canavezes | 878.44 mi (1,413.72 km) |
| Widnes to Marinha Grande | 984.76 mi (1,584.82 km) |
| Widnes to Massama | 1,055.78 mi (1,699.11 km) |
| Widnes to Matosinhos | 886.11 mi (1,426.05 km) |
| Widnes to Mealhada | 935.89 mi (1,506.17 km) |
| Widnes to Melgaco | 817.93 mi (1,316.34 km) |
| Widnes to Melres | 889.61 mi (1,431.69 km) |
| Widnes to Mira | 936.44 mi (1,507.05 km) |
| Widnes to Miranda do Corvo | 953.32 mi (1,534.21 km) |
| Widnes to Mirandela | 846.24 mi (1,361.89 km) |
| Widnes to Mogadouro | 851.54 mi (1,370.42 km) |
| Widnes to Moimenta da Beira | 885.31 mi (1,424.77 km) |
| Widnes to Moita | 1,058.96 mi (1,704.22 km) |
| Widnes to Moncao | 823.92 mi (1,325.98 km) |
