| Barrow in Furness to Mangualde | 956.55 mi (1,539.41 km) |
| Barrow in Furness to Marco de Canavezes | 921.57 mi (1,483.13 km) |
| Barrow in Furness to Marinha Grande | 1,027.29 mi (1,653.26 km) |
| Barrow in Furness to Massama | 1,098.27 mi (1,767.49 km) |
| Barrow in Furness to Matosinhos | 928.13 mi (1,493.69 km) |
| Barrow in Furness to Mealhada | 978.94 mi (1,575.45 km) |
| Barrow in Furness to Melgaco | 860.16 mi (1,384.29 km) |
| Barrow in Furness to Melres | 932.32 mi (1,500.42 km) |
| Barrow in Furness to Mira | 978.91 mi (1,575.40 km) |
| Barrow in Furness to Miranda do Corvo | 996.75 mi (1,604.11 km) |
| Barrow in Furness to Mirandela | 891.09 mi (1,434.07 km) |
| Barrow in Furness to Mogadouro | 897.34 mi (1,444.13 km) |
| Barrow in Furness to Moimenta da Beira | 929.60 mi (1,496.05 km) |
| Barrow in Furness to Moita | 1,102.01 mi (1,773.52 km) |
| Barrow in Furness to Moncao | 865.73 mi (1,393.25 km) |
