| Grande-Synthe to Montemor-o-Novo | 995.48 mi (1,602.07 km) |
| Grande-Synthe to Montemor-o-Velho | 916.48 mi (1,474.93 km) |
| Grande-Synthe to Montijo | 1,010.88 mi (1,626.86 km) |
| Grande-Synthe to Mortagua | 888.42 mi (1,429.77 km) |
| Grande-Synthe to Moura | 1,009.14 mi (1,624.06 km) |
| Grande-Synthe to Murtosa | 881.92 mi (1,419.31 km) |
| Grande-Synthe to Nazare | 960.50 mi (1,545.77 km) |
| Grande-Synthe to Nelas | 873.15 mi (1,405.20 km) |
| Grande-Synthe to Obidos | 977.33 mi (1,572.86 km) |
| Grande-Synthe to Odemira | 1,071.43 mi (1,724.30 km) |
| Grande-Synthe to Odivelas | 1,011.82 mi (1,628.37 km) |
| Grande-Synthe to Oeiras | 1,021.90 mi (1,644.59 km) |
| Grande-Synthe to Olhao | 1,087.63 mi (1,750.37 km) |
| Grande-Synthe to Oliveira de Azemeis | 871.24 mi (1,402.13 km) |
| Grande-Synthe to Oliveira de Frades | 870.34 mi (1,400.67 km) |
