| Catford to Mangualde | 834.93 mi (1,343.69 km) |
| Catford to Marco de Canavezes | 807.07 mi (1,298.86 km) |
| Catford to Marinha Grande | 914.20 mi (1,471.25 km) |
| Catford to Massama | 984.22 mi (1,583.95 km) |
| Catford to Matosinhos | 819.84 mi (1,319.41 km) |
| Catford to Mealhada | 863.74 mi (1,390.06 km) |
| Catford to Melgaco | 752.35 mi (1,210.79 km) |
| Catford to Melres | 820.02 mi (1,319.69 km) |
| Catford to Mira | 867.00 mi (1,395.31 km) |
| Catford to Miranda do Corvo | 878.99 mi (1,414.59 km) |
| Catford to Mirandela | 767.05 mi (1,234.45 km) |
| Catford to Mogadouro | 767.31 mi (1,234.87 km) |
| Catford to Moimenta da Beira | 808.08 mi (1,300.48 km) |
| Catford to Moita | 984.68 mi (1,584.69 km) |
| Catford to Moncao | 760.20 mi (1,223.42 km) |
