| Boulogne-sur-Mer to Montemor-o-Novo | 962.16 mi (1,548.45 km) |
| Boulogne-sur-Mer to Montemor-o-Velho | 882.20 mi (1,419.76 km) |
| Boulogne-sur-Mer to Montijo | 977.12 mi (1,572.52 km) |
| Boulogne-sur-Mer to Mortagua | 854.27 mi (1,374.82 km) |
| Boulogne-sur-Mer to Moura | 976.61 mi (1,571.70 km) |
| Boulogne-sur-Mer to Murtosa | 847.41 mi (1,363.78 km) |
| Boulogne-sur-Mer to Nazare | 926.25 mi (1,490.65 km) |
| Boulogne-sur-Mer to Nelas | 839.21 mi (1,350.57 km) |
| Boulogne-sur-Mer to Obidos | 943.13 mi (1,517.83 km) |
| Boulogne-sur-Mer to Odemira | 1,038.29 mi (1,670.96 km) |
| Boulogne-sur-Mer to Odivelas | 977.84 mi (1,573.69 km) |
| Boulogne-sur-Mer to Oeiras | 987.89 mi (1,589.86 km) |
| Boulogne-sur-Mer to Olhao | 1,055.28 mi (1,698.30 km) |
| Boulogne-sur-Mer to Oliveira de Azemeis | 836.78 mi (1,346.66 km) |
| Boulogne-sur-Mer to Oliveira de Frades | 836.09 mi (1,345.56 km) |
