| Newcastle under Lyme to Mangualde | 895.59 mi (1,441.32 km) |
| Newcastle under Lyme to Marco de Canavezes | 862.64 mi (1,388.29 km) |
| Newcastle under Lyme to Marinha Grande | 969.34 mi (1,560.00 km) |
| Newcastle under Lyme to Massama | 1,040.32 mi (1,674.23 km) |
| Newcastle under Lyme to Matosinhos | 871.19 mi (1,402.05 km) |
| Newcastle under Lyme to Mealhada | 920.10 mi (1,480.75 km) |
| Newcastle under Lyme to Melgaco | 802.94 mi (1,292.21 km) |
| Newcastle under Lyme to Melres | 874.14 mi (1,406.79 km) |
| Newcastle under Lyme to Mira | 921.10 mi (1,482.37 km) |
| Newcastle under Lyme to Miranda do Corvo | 937.19 mi (1,508.26 km) |
| Newcastle under Lyme to Mirandela | 829.04 mi (1,334.21 km) |
| Newcastle under Lyme to Mogadouro | 833.51 mi (1,341.41 km) |
| Newcastle under Lyme to Moimenta da Beira | 868.54 mi (1,397.78 km) |
| Newcastle under Lyme to Moita | 1,043.04 mi (1,678.61 km) |
| Newcastle under Lyme to Moncao | 809.26 mi (1,302.39 km) |
