| Portimao to Oak Harbor (Washington) | 5,282.49 mi (8,501.35 km) |
| Portimao to Oak Hills (Oregon) | 5,416.81 mi (8,717.51 km) |
| Portimao to Oak Lawn (Illinois) | 4,085.53 mi (6,575.02 km) |
| Portimao to Oak Park (California) | 5,777.31 mi (9,297.68 km) |
| Portimao to Oak Park (Illinois) | 4,082.37 mi (6,569.95 km) |
| Portimao to Oak Park (Michigan) | 3,849.44 mi (6,195.08 km) |
| Portimao to Oak Ridge (Florida) | 4,172.41 mi (6,714.85 km) |
| Portimao to Oak Ridge (New Jersey) | 3,462.23 mi (5,571.92 km) |
| Portimao to Oak Ridge (Tennessee) | 4,084.44 mi (6,573.27 km) |
| Portimao to Oakdale (California) | 5,700.40 mi (9,173.91 km) |
| Portimao to Oakdale (Minnesota) | 4,229.34 mi (6,806.46 km) |
| Portimao to Oakland (California) | 5,754.40 mi (9,260.81 km) |
| Portimao to Oakland (New Jersey) | 3,449.57 mi (5,551.55 km) |
| Portimao to Oakland Park (Florida) | 4,182.12 mi (6,730.47 km) |
| Portimao to Oakleaf Plantation (Florida) | 4,138.71 mi (6,660.61 km) |
