| Whitby to Mangualde | 1,014.03 mi (1,631.92 km) |
| Whitby to Marco de Canavezes | 981.87 mi (1,580.16 km) |
| Whitby to Marinha Grande | 1,088.78 mi (1,752.22 km) |
| Whitby to Massama | 1,159.70 mi (1,866.36 km) |
| Whitby to Matosinhos | 991.02 mi (1,594.89 km) |
| Whitby to Mealhada | 1,039.29 mi (1,672.58 km) |
| Whitby to Melgaco | 922.76 mi (1,485.03 km) |
| Whitby to Melres | 993.60 mi (1,599.04 km) |
| Whitby to Mira | 1,040.63 mi (1,674.73 km) |
| Whitby to Miranda do Corvo | 1,056.11 mi (1,699.65 km) |
| Whitby to Mirandela | 947.10 mi (1,524.21 km) |
| Whitby to Mogadouro | 950.71 mi (1,530.02 km) |
| Whitby to Moimenta da Beira | 986.96 mi (1,588.36 km) |
| Whitby to Moita | 1,162.08 mi (1,870.18 km) |
| Whitby to Moncao | 929.28 mi (1,495.52 km) |
