| Altenburg to Montemor-o-Novo | 1,315.08 mi (2,116.42 km) |
| Altenburg to Montemor-o-Velho | 1,258.11 mi (2,024.74 km) |
| Altenburg to Montijo | 1,338.68 mi (2,154.40 km) |
| Altenburg to Mortagua | 1,228.23 mi (1,976.64 km) |
| Altenburg to Moura | 1,313.84 mi (2,114.42 km) |
| Altenburg to Murtosa | 1,229.56 mi (1,978.79 km) |
| Altenburg to Nazare | 1,299.91 mi (2,092.00 km) |
| Altenburg to Nelas | 1,209.63 mi (1,946.71 km) |
| Altenburg to Obidos | 1,315.09 mi (2,116.44 km) |
| Altenburg to Odemira | 1,384.95 mi (2,228.87 km) |
| Altenburg to Odivelas | 1,343.81 mi (2,162.65 km) |
| Altenburg to Oeiras | 1,354.25 mi (2,179.46 km) |
| Altenburg to Olhao | 1,386.05 mi (2,230.63 km) |
| Altenburg to Oliveira de Azemeis | 1,218.47 mi (1,960.94 km) |
| Altenburg to Oliveira de Frades | 1,212.95 mi (1,952.06 km) |
