| Rio Tinto to Montalegre | 59.73 mi (96.12 km) |
| Rio Tinto to Montemor-o-Novo | 175.61 mi (282.62 km) |
| Rio Tinto to Montemor-o-Velho | 70.17 mi (112.93 km) |
| Rio Tinto to Montijo | 173.31 mi (278.91 km) |
| Rio Tinto to Mortagua | 54.22 mi (87.25 km) |
| Rio Tinto to Moura | 218.49 mi (351.63 km) |
| Rio Tinto to Murtosa | 30.96 mi (49.83 km) |
| Rio Tinto to Nazare | 112.24 mi (180.64 km) |
| Rio Tinto to Nelas | 58.86 mi (94.73 km) |
| Rio Tinto to Obidos | 129.63 mi (208.62 km) |
| Rio Tinto to Odemira | 248.40 mi (399.76 km) |
| Rio Tinto to Odivelas | 168.20 mi (270.70 km) |
| Rio Tinto to Oeiras | 176.97 mi (284.80 km) |
| Rio Tinto to Olhao | 289.45 mi (465.83 km) |
| Rio Tinto to Oliveira de Azemeis | 23.77 mi (38.25 km) |
