| Yiewsley to Mangualde | 829.83 mi (1,335.48 km) |
| Yiewsley to Marco de Canavezes | 801.15 mi (1,289.33 km) |
| Yiewsley to Marinha Grande | 908.36 mi (1,461.87 km) |
| Yiewsley to Massama | 978.61 mi (1,574.93 km) |
| Yiewsley to Matosinhos | 813.32 mi (1,308.91 km) |
| Yiewsley to Mealhada | 858.02 mi (1,380.86 km) |
| Yiewsley to Melgaco | 745.59 mi (1,199.92 km) |
| Yiewsley to Melres | 813.90 mi (1,309.85 km) |
| Yiewsley to Mira | 860.95 mi (1,385.57 km) |
| Yiewsley to Miranda do Corvo | 873.57 mi (1,405.88 km) |
| Yiewsley to Mirandela | 762.05 mi (1,226.40 km) |
| Yiewsley to Mogadouro | 762.98 mi (1,227.89 km) |
| Yiewsley to Moimenta da Beira | 802.91 mi (1,292.15 km) |
| Yiewsley to Moita | 979.42 mi (1,576.22 km) |
| Yiewsley to Moncao | 753.24 mi (1,212.22 km) |
