| Monkseaton to Mangualde | 1,038.54 mi (1,671.37 km) |
| Monkseaton to Marco de Canavezes | 1,005.00 mi (1,617.39 km) |
| Monkseaton to Marinha Grande | 1,111.44 mi (1,788.69 km) |
| Monkseaton to Massama | 1,182.45 mi (1,902.97 km) |
| Monkseaton to Matosinhos | 1,012.88 mi (1,630.08 km) |
| Monkseaton to Mealhada | 1,062.46 mi (1,709.86 km) |
| Monkseaton to Melgaco | 944.69 mi (1,520.33 km) |
| Monkseaton to Melres | 1,016.26 mi (1,635.52 km) |
| Monkseaton to Mira | 1,063.13 mi (1,710.94 km) |
| Monkseaton to Miranda do Corvo | 1,079.77 mi (1,737.73 km) |
| Monkseaton to Mirandela | 972.21 mi (1,564.62 km) |
| Monkseaton to Mogadouro | 977.02 mi (1,572.37 km) |
| Monkseaton to Moimenta da Beira | 1,011.50 mi (1,627.85 km) |
| Monkseaton to Moita | 1,185.49 mi (1,907.87 km) |
| Monkseaton to Moncao | 950.74 mi (1,530.06 km) |
