| Petite-Synthe to Montemor-o-Novo | 997.25 mi (1,604.92 km) |
| Petite-Synthe to Montemor-o-Velho | 918.35 mi (1,477.94 km) |
| Petite-Synthe to Montijo | 1,012.70 mi (1,629.78 km) |
| Petite-Synthe to Mortagua | 890.27 mi (1,432.76 km) |
| Petite-Synthe to Moura | 1,010.83 mi (1,626.78 km) |
| Petite-Synthe to Murtosa | 883.81 mi (1,422.36 km) |
| Petite-Synthe to Nazare | 962.36 mi (1,548.77 km) |
| Petite-Synthe to Nelas | 874.99 mi (1,408.16 km) |
| Petite-Synthe to Obidos | 979.19 mi (1,575.86 km) |
| Petite-Synthe to Odemira | 1,073.18 mi (1,727.12 km) |
| Petite-Synthe to Odivelas | 1,013.66 mi (1,631.32 km) |
| Petite-Synthe to Oeiras | 1,023.74 mi (1,647.55 km) |
| Petite-Synthe to Olhao | 1,089.30 mi (1,753.06 km) |
| Petite-Synthe to Oliveira de Azemeis | 873.13 mi (1,405.17 km) |
| Petite-Synthe to Oliveira de Frades | 872.20 mi (1,403.68 km) |
