| Oosterend to Montemor-o-Novo | 1,202.00 mi (1,934.44 km) |
| Oosterend to Montemor-o-Velho | 1,125.55 mi (1,811.39 km) |
| Oosterend to Montijo | 1,218.62 mi (1,961.19 km) |
| Oosterend to Mortagua | 1,097.18 mi (1,765.74 km) |
| Oosterend to Moura | 1,213.31 mi (1,952.63 km) |
| Oosterend to Murtosa | 1,091.49 mi (1,756.58 km) |
| Oosterend to Nazare | 1,169.46 mi (1,882.07 km) |
| Oosterend to Nelas | 1,081.46 mi (1,740.43 km) |
| Oosterend to Obidos | 1,186.17 mi (1,908.96 km) |
| Oosterend to Odemira | 1,277.37 mi (2,055.72 km) |
| Oosterend to Odivelas | 1,220.10 mi (1,963.55 km) |
| Oosterend to Oeiras | 1,230.26 mi (1,979.90 km) |
| Oosterend to Olhao | 1,291.11 mi (2,077.84 km) |
| Oosterend to Oliveira de Azemeis | 1,080.74 mi (1,739.28 km) |
| Oosterend to Oliveira de Frades | 1,079.35 mi (1,737.05 km) |
