| Portimao to Myrtle Grove (North Carolina) | 3,810.36 mi (6,132.18 km) |
| Portimao to Nacogdoches (Texas) | 4,750.05 mi (7,644.46 km) |
| Portimao to Nampa (Idaho) | 5,269.00 mi (8,479.63 km) |
| Portimao to Nanakuli (Hawaii) | 7,934.72 mi (12,769.70 km) |
| Portimao to Nanticoke (Pennsylvania) | 3,532.63 mi (5,685.22 km) |
| Portimao to Nanuet (New York) | 3,437.03 mi (5,531.37 km) |
| Portimao to Napa (California) | 5,734.02 mi (9,228.01 km) |
| Portimao to Naperville (Illinois) | 4,103.98 mi (6,604.71 km) |
| Portimao to Naples (Florida) | 4,271.34 mi (6,874.05 km) |
| Portimao to Naranja (Florida) | 4,219.40 mi (6,790.46 km) |
| Portimao to Nashua (New Hampshire) | 3,279.73 mi (5,278.22 km) |
| Portimao to Nashville (Tennessee) | 4,202.89 mi (6,763.89 km) |
| Portimao to Natchez (Mississippi) | 4,587.50 mi (7,382.86 km) |
| Portimao to Natchitoches (Louisiana) | 4,667.54 mi (7,511.68 km) |
| Portimao to National City (California) | 5,773.15 mi (9,290.98 km) |
