| Portlethen to Indianola (Iowa) | 3,939.56 mi (6,340.10 km) |
| Portlethen to Indio (California) | 5,089.16 mi (8,190.21 km) |
| Portlethen to Inglewood (California) | 5,137.96 mi (8,268.75 km) |
| Portlethen to Inkster (Michigan) | 3,538.64 mi (5,694.90 km) |
| Portlethen to Inver Grove Heights (Minnesota) | 3,742.87 mi (6,023.57 km) |
| Portlethen to Inwood (New York) | 3,276.84 mi (5,273.56 km) |
| Portlethen to Iona (Florida) | 4,323.50 mi (6,958.00 km) |
| Portlethen to Ionia (Michigan) | 3,565.96 mi (5,738.86 km) |
| Portlethen to Iowa City (Iowa) | 3,855.50 mi (6,204.82 km) |
| Portlethen to Irmo (South Carolina) | 3,884.72 mi (6,251.86 km) |
| Portlethen to Irondale (Alabama) | 4,113.78 mi (6,620.49 km) |
| Portlethen to Ironton (Ohio) | 3,707.09 mi (5,965.99 km) |
| Portlethen to Irvine (California) | 5,137.96 mi (8,268.75 km) |
| Portlethen to Irving (Texas) | 4,516.41 mi (7,268.46 km) |
| Portlethen to Isabela (Puerto Rico) | 4,213.43 mi (6,780.86 km) |
