| Ocean Acres to Montalegre | 3,391.52 mi (5,458.13 km) |
| Ocean Acres to Montemor-o-Novo | 3,453.84 mi (5,558.41 km) |
| Ocean Acres to Montemor-o-Velho | 3,390.35 mi (5,456.25 km) |
| Ocean Acres to Montijo | 3,419.07 mi (5,502.46 km) |
| Ocean Acres to Mortagua | 3,405.42 mi (5,480.50 km) |
| Ocean Acres to Moura | 3,506.22 mi (5,642.72 km) |
| Ocean Acres to Murtosa | 3,378.23 mi (5,436.74 km) |
| Ocean Acres to Nazare | 3,386.33 mi (5,449.77 km) |
| Ocean Acres to Nelas | 3,421.93 mi (5,507.06 km) |
| Ocean Acres to Obidos | 3,388.22 mi (5,452.81 km) |
| Ocean Acres to Odemira | 3,462.81 mi (5,572.85 km) |
| Ocean Acres to Odivelas | 3,402.30 mi (5,475.48 km) |
| Ocean Acres to Oeiras | 3,398.39 mi (5,469.18 km) |
| Ocean Acres to Olhao | 3,518.38 mi (5,662.28 km) |
| Ocean Acres to Oliveira de Azemeis | 3,383.22 mi (5,444.76 km) |
