| Oria to Montemor-o-Novo | 1,377.65 mi (2,217.11 km) |
| Oria to Montemor-o-Velho | 1,381.10 mi (2,222.67 km) |
| Oria to Montijo | 1,412.95 mi (2,273.92 km) |
| Oria to Mortagua | 1,354.77 mi (2,180.29 km) |
| Oria to Moura | 1,346.15 mi (2,166.42 km) |
| Oria to Murtosa | 1,372.54 mi (2,208.89 km) |
| Oria to Nazare | 1,408.13 mi (2,266.17 km) |
| Oria to Nelas | 1,334.00 mi (2,146.86 km) |
| Oria to Obidos | 1,416.22 mi (2,279.19 km) |
| Oria to Odemira | 1,418.55 mi (2,282.93 km) |
| Oria to Odivelas | 1,425.90 mi (2,294.76 km) |
| Oria to Oeiras | 1,434.80 mi (2,309.08 km) |
| Oria to Olhao | 1,388.24 mi (2,234.15 km) |
| Oria to Oliveira de Azemeis | 1,363.33 mi (2,194.07 km) |
| Oria to Oliveira de Frades | 1,349.36 mi (2,171.58 km) |
