| Osterode to Montemor-o-Novo | 1,267.92 mi (2,040.52 km) |
| Osterode to Montemor-o-Velho | 1,204.15 mi (1,937.89 km) |
| Osterode to Montijo | 1,289.33 mi (2,074.97 km) |
| Osterode to Mortagua | 1,174.58 mi (1,890.30 km) |
| Osterode to Moura | 1,270.87 mi (2,045.27 km) |
| Osterode to Murtosa | 1,173.61 mi (1,888.74 km) |
| Osterode to Nazare | 1,246.89 mi (2,006.67 km) |
| Osterode to Nelas | 1,156.80 mi (1,861.69 km) |
| Osterode to Obidos | 1,262.66 mi (2,032.06 km) |
| Osterode to Odemira | 1,340.02 mi (2,156.55 km) |
| Osterode to Odivelas | 1,293.26 mi (2,081.31 km) |
| Osterode to Oeiras | 1,303.67 mi (2,098.06 km) |
| Osterode to Olhao | 1,345.38 mi (2,165.18 km) |
| Osterode to Oliveira de Azemeis | 1,162.56 mi (1,870.97 km) |
| Osterode to Oliveira de Frades | 1,158.36 mi (1,864.20 km) |
