| London Colney to Mangualde | 846.27 mi (1,361.94 km) |
| London Colney to Marco de Canavezes | 817.57 mi (1,315.74 km) |
| London Colney to Marinha Grande | 924.78 mi (1,488.29 km) |
| London Colney to Massama | 995.04 mi (1,601.36 km) |
| London Colney to Matosinhos | 829.69 mi (1,335.25 km) |
| London Colney to Mealhada | 874.45 mi (1,407.29 km) |
| London Colney to Melgaco | 761.95 mi (1,226.24 km) |
| London Colney to Melres | 830.30 mi (1,336.24 km) |
| London Colney to Mira | 877.36 mi (1,411.97 km) |
| London Colney to Miranda do Corvo | 890.00 mi (1,432.32 km) |
| London Colney to Mirandela | 778.49 mi (1,252.86 km) |
| London Colney to Mogadouro | 779.42 mi (1,254.35 km) |
| London Colney to Moimenta da Beira | 819.35 mi (1,318.61 km) |
| London Colney to Moita | 995.85 mi (1,602.67 km) |
| London Colney to Moncao | 769.57 mi (1,238.50 km) |
