| Portishead to Montalegre | 708.41 mi (1,140.07 km) |
| Portishead to Montemor-o-Novo | 925.17 mi (1,488.91 km) |
| Portishead to Montemor-o-Velho | 831.60 mi (1,338.34 km) |
| Portishead to Montijo | 932.92 mi (1,501.39 km) |
| Portishead to Mortagua | 806.90 mi (1,298.59 km) |
| Portishead to Moura | 950.12 mi (1,529.08 km) |
| Portishead to Murtosa | 793.61 mi (1,277.19 km) |
| Portishead to Nazare | 875.13 mi (1,408.39 km) |
| Portishead to Nelas | 795.64 mi (1,280.46 km) |
| Portishead to Obidos | 892.53 mi (1,436.38 km) |
| Portishead to Odemira | 1,002.21 mi (1,612.90 km) |
| Portishead to Odivelas | 930.25 mi (1,497.10 km) |
| Portishead to Oeiras | 939.52 mi (1,512.02 km) |
| Portishead to Olhao | 1,029.44 mi (1,656.72 km) |
| Portishead to Oliveira de Azemeis | 783.99 mi (1,261.71 km) |
