| Portimao to Indianola (Iowa) | 4,366.94 mi (7,027.91 km) |
| Portimao to Indio (California) | 5,687.31 mi (9,152.84 km) |
| Portimao to Inglewood (California) | 5,769.45 mi (9,285.03 km) |
| Portimao to Inkster (Michigan) | 3,860.08 mi (6,212.21 km) |
| Portimao to Inver Grove Heights (Minnesota) | 4,238.36 mi (6,820.98 km) |
| Portimao to Inwood (New York) | 3,434.15 mi (5,526.72 km) |
| Portimao to Iona (Florida) | 4,267.67 mi (6,868.15 km) |
| Portimao to Ionia (Michigan) | 3,925.38 mi (6,317.28 km) |
| Portimao to Iowa City (Iowa) | 4,263.73 mi (6,861.82 km) |
| Portimao to Irmo (South Carolina) | 3,982.45 mi (6,409.14 km) |
| Portimao to Irondale (Alabama) | 4,279.81 mi (6,887.69 km) |
| Portimao to Ironton (Ohio) | 3,929.43 mi (6,323.80 km) |
| Portimao to Irvine (California) | 5,757.30 mi (9,265.48 km) |
| Portimao to Irving (Texas) | 4,820.25 mi (7,757.44 km) |
| Portimao to Isabela (Puerto Rico) | 3,736.11 mi (6,012.69 km) |
