| Mablethorpe to Montalegre | 878.55 mi (1,413.88 km) |
| Mablethorpe to Montemor-o-Novo | 1,091.75 mi (1,756.99 km) |
| Mablethorpe to Montemor-o-Velho | 1,002.07 mi (1,612.68 km) |
| Mablethorpe to Montijo | 1,101.91 mi (1,773.36 km) |
| Mablethorpe to Mortagua | 976.25 mi (1,571.13 km) |
| Mablethorpe to Moura | 1,113.03 mi (1,791.25 km) |
| Mablethorpe to Murtosa | 964.82 mi (1,552.72 km) |
| Mablethorpe to Nazare | 1,045.98 mi (1,683.33 km) |
| Mablethorpe to Nelas | 963.71 mi (1,550.94 km) |
| Mablethorpe to Obidos | 1,063.30 mi (1,711.22 km) |
| Mablethorpe to Odemira | 1,168.82 mi (1,881.03 km) |
| Mablethorpe to Odivelas | 1,100.29 mi (1,770.75 km) |
| Mablethorpe to Oeiras | 1,109.84 mi (1,786.11 km) |
| Mablethorpe to Olhao | 1,192.47 mi (1,919.09 km) |
| Mablethorpe to Oliveira de Azemeis | 954.85 mi (1,536.68 km) |
