| Aosta to Montemor-o-Novo | 931.28 mi (1,498.75 km) |
| Aosta to Montemor-o-Velho | 893.78 mi (1,438.40 km) |
| Aosta to Montijo | 959.67 mi (1,544.44 km) |
| Aosta to Mortagua | 864.00 mi (1,390.47 km) |
| Aosta to Moura | 920.61 mi (1,481.57 km) |
| Aosta to Murtosa | 872.10 mi (1,403.51 km) |
| Aosta to Nazare | 931.60 mi (1,499.26 km) |
| Aosta to Nelas | 843.69 mi (1,357.79 km) |
| Aosta to Obidos | 944.73 mi (1,520.40 km) |
| Aosta to Odemira | 994.59 mi (1,600.64 km) |
| Aosta to Odivelas | 967.69 mi (1,557.34 km) |
| Aosta to Oeiras | 977.98 mi (1,573.91 km) |
| Aosta to Olhao | 986.88 mi (1,588.23 km) |
| Aosta to Oliveira de Azemeis | 861.31 mi (1,386.14 km) |
| Aosta to Oliveira de Frades | 852.02 mi (1,371.20 km) |
