| Aiken to Montalegre | 3,959.03 mi (6,371.45 km) |
| Aiken to Montemor-o-Novo | 4,008.07 mi (6,450.36 km) |
| Aiken to Montemor-o-Velho | 3,950.44 mi (6,357.62 km) |
| Aiken to Montijo | 3,972.53 mi (6,393.16 km) |
| Aiken to Mortagua | 3,967.11 mi (6,384.45 km) |
| Aiken to Moura | 4,059.24 mi (6,532.72 km) |
| Aiken to Murtosa | 3,940.68 mi (6,341.91 km) |
| Aiken to Nazare | 3,943.57 mi (6,346.57 km) |
| Aiken to Nelas | 3,984.38 mi (6,412.24 km) |
| Aiken to Obidos | 3,944.31 mi (6,347.75 km) |
| Aiken to Odemira | 4,011.66 mi (6,456.15 km) |
| Aiken to Odivelas | 3,955.86 mi (6,366.34 km) |
| Aiken to Oeiras | 3,951.29 mi (6,358.99 km) |
| Aiken to Olhao | 4,065.86 mi (6,543.38 km) |
| Aiken to Oliveira de Azemeis | 3,946.26 mi (6,350.90 km) |
