| Portes-les-Valence to Montemor-o-Novo | 798.65 mi (1,285.30 km) |
| Portes-les-Valence to Montemor-o-Velho | 761.98 mi (1,226.28 km) |
| Portes-les-Valence to Montijo | 827.06 mi (1,331.02 km) |
| Portes-les-Valence to Mortagua | 732.28 mi (1,178.48 km) |
| Portes-les-Valence to Moura | 788.31 mi (1,268.66 km) |
| Portes-les-Valence to Murtosa | 741.02 mi (1,192.55 km) |
| Portes-les-Valence to Nazare | 799.44 mi (1,286.57 km) |
| Portes-les-Valence to Nelas | 711.87 mi (1,145.65 km) |
| Portes-les-Valence to Obidos | 812.43 mi (1,307.48 km) |
| Portes-les-Valence to Odemira | 862.18 mi (1,387.54 km) |
| Portes-les-Valence to Odivelas | 835.13 mi (1,344.02 km) |
| Portes-les-Valence to Oeiras | 845.42 mi (1,360.57 km) |
| Portes-les-Valence to Olhao | 855.22 mi (1,376.34 km) |
| Portes-les-Valence to Oliveira de Azemeis | 730.29 mi (1,175.29 km) |
| Portes-les-Valence to Oliveira de Frades | 720.64 mi (1,159.76 km) |
