| Kew Green to Mangualde | 835.88 mi (1,345.22 km) |
| Kew Green to Marco de Canavezes | 807.57 mi (1,299.66 km) |
| Kew Green to Marinha Grande | 914.75 mi (1,472.15 km) |
| Kew Green to Massama | 984.90 mi (1,585.05 km) |
| Kew Green to Matosinhos | 820.01 mi (1,319.67 km) |
| Kew Green to Mealhada | 864.36 mi (1,391.05 km) |
| Kew Green to Melgaco | 752.38 mi (1,210.84 km) |
| Kew Green to Melres | 820.41 mi (1,320.32 km) |
| Kew Green to Mira | 867.43 mi (1,396.00 km) |
| Kew Green to Miranda do Corvo | 879.77 mi (1,415.85 km) |
| Kew Green to Mirandela | 768.05 mi (1,236.06 km) |
| Kew Green to Mogadouro | 768.67 mi (1,237.06 km) |
| Kew Green to Moimenta da Beira | 808.99 mi (1,301.94 km) |
| Kew Green to Moita | 985.55 mi (1,586.09 km) |
| Kew Green to Moncao | 760.11 mi (1,223.28 km) |
