| Harwich to Montalegre | 817.76 mi (1,316.05 km) |
| Harwich to Montemor-o-Novo | 1,025.06 mi (1,649.67 km) |
| Harwich to Montemor-o-Velho | 940.73 mi (1,513.95 km) |
| Harwich to Montijo | 1,038.01 mi (1,670.52 km) |
| Harwich to Mortagua | 913.62 mi (1,470.34 km) |
| Harwich to Moura | 1,042.43 mi (1,677.62 km) |
| Harwich to Murtosa | 904.76 mi (1,456.07 km) |
| Harwich to Nazare | 984.84 mi (1,584.95 km) |
| Harwich to Nelas | 899.60 mi (1,447.76 km) |
| Harwich to Obidos | 1,001.96 mi (1,612.50 km) |
| Harwich to Odemira | 1,101.75 mi (1,773.09 km) |
| Harwich to Odivelas | 1,037.74 mi (1,670.08 km) |
| Harwich to Oeiras | 1,047.60 mi (1,685.94 km) |
| Harwich to Olhao | 1,121.56 mi (1,804.97 km) |
| Harwich to Oliveira de Azemeis | 894.37 mi (1,439.36 km) |
