| Birkenau to Montemor-o-Novo | 1,123.65 mi (1,808.33 km) |
| Birkenau to Montemor-o-Velho | 1,066.43 mi (1,716.25 km) |
| Birkenau to Montijo | 1,147.05 mi (1,845.99 km) |
| Birkenau to Mortagua | 1,036.53 mi (1,668.14 km) |
| Birkenau to Moura | 1,123.09 mi (1,807.44 km) |
| Birkenau to Murtosa | 1,038.03 mi (1,670.55 km) |
| Birkenau to Nazare | 1,108.19 mi (1,783.45 km) |
| Birkenau to Nelas | 1,017.91 mi (1,638.17 km) |
| Birkenau to Obidos | 1,123.36 mi (1,807.87 km) |
| Birkenau to Odemira | 1,193.86 mi (1,921.33 km) |
| Birkenau to Odivelas | 1,152.11 mi (1,854.14 km) |
| Birkenau to Oeiras | 1,162.55 mi (1,870.95 km) |
| Birkenau to Olhao | 1,195.88 mi (1,924.58 km) |
| Birkenau to Oliveira de Azemeis | 1,026.95 mi (1,652.71 km) |
| Birkenau to Oliveira de Frades | 1,021.31 mi (1,643.65 km) |
