| Kingston upon Thames to Mangualde | 827.03 mi (1,330.97 km) |
| Kingston upon Thames to Marco de Canavezes | 798.78 mi (1,285.51 km) |
| Kingston upon Thames to Marinha Grande | 905.95 mi (1,457.98 km) |
| Kingston upon Thames to Massama | 976.08 mi (1,570.85 km) |
| Kingston upon Thames to Matosinhos | 811.26 mi (1,305.60 km) |
| Kingston upon Thames to Mealhada | 855.54 mi (1,376.87 km) |
| Kingston upon Thames to Melgaco | 743.66 mi (1,196.80 km) |
| Kingston upon Thames to Melres | 811.63 mi (1,306.19 km) |
| Kingston upon Thames to Mira | 858.65 mi (1,381.86 km) |
| Kingston upon Thames to Miranda do Corvo | 870.94 mi (1,401.63 km) |
| Kingston upon Thames to Mirandela | 759.19 mi (1,221.80 km) |
| Kingston upon Thames to Mogadouro | 759.78 mi (1,222.75 km) |
| Kingston upon Thames to Moimenta da Beira | 800.14 mi (1,287.70 km) |
| Kingston upon Thames to Moita | 976.71 mi (1,571.86 km) |
| Kingston upon Thames to Moncao | 751.41 mi (1,209.28 km) |
