| Seaford to Montalegre | 722.99 mi (1,163.54 km) |
| Seaford to Montemor-o-Novo | 930.28 mi (1,497.14 km) |
| Seaford to Montemor-o-Velho | 845.91 mi (1,361.35 km) |
| Seaford to Montijo | 943.15 mi (1,517.86 km) |
| Seaford to Mortagua | 818.77 mi (1,317.69 km) |
| Seaford to Moura | 948.00 mi (1,525.65 km) |
| Seaford to Murtosa | 810.01 mi (1,303.58 km) |
| Seaford to Nazare | 890.02 mi (1,432.35 km) |
| Seaford to Nelas | 804.74 mi (1,295.10 km) |
| Seaford to Obidos | 907.13 mi (1,459.89 km) |
| Seaford to Odemira | 1,007.00 mi (1,620.62 km) |
| Seaford to Odivelas | 942.88 mi (1,517.42 km) |
| Seaford to Oeiras | 952.74 mi (1,533.29 km) |
| Seaford to Olhao | 1,027.19 mi (1,653.10 km) |
| Seaford to Oliveira de Azemeis | 799.60 mi (1,286.83 km) |
