| Oceanside to Montalegre | 5,593.84 mi (9,002.41 km) |
| Oceanside to Montemor-o-Novo | 5,708.17 mi (9,186.42 km) |
| Oceanside to Montemor-o-Velho | 5,625.30 mi (9,053.05 km) |
| Oceanside to Montijo | 5,677.33 mi (9,136.78 km) |
| Oceanside to Mortagua | 5,633.24 mi (9,065.83 km) |
| Oceanside to Moura | 5,762.84 mi (9,274.39 km) |
| Oceanside to Murtosa | 5,604.02 mi (9,018.80 km) |
| Oceanside to Nazare | 5,632.35 mi (9,064.39 km) |
| Oceanside to Nelas | 5,645.85 mi (9,086.12 km) |
| Oceanside to Obidos | 5,638.40 mi (9,074.13 km) |
| Oceanside to Odemira | 5,734.54 mi (9,228.86 km) |
| Oceanside to Odivelas | 5,660.82 mi (9,110.22 km) |
| Oceanside to Oeiras | 5,659.30 mi (9,107.76 km) |
| Oceanside to Olhao | 5,792.51 mi (9,322.15 km) |
| Oceanside to Oliveira de Azemeis | 5,606.25 mi (9,022.39 km) |
