| National City to Indianapolis (Indiana) | 1,783.94 mi (2,870.97 km) |
| National City to Indianola (Iowa) | 1,424.55 mi (2,292.58 km) |
| National City to Indio (California) | 89.17 mi (143.50 km) |
| National City to Inglewood (California) | 114.61 mi (184.45 km) |
| National City to Inkster (Michigan) | 1,952.93 mi (3,142.94 km) |
| National City to Inver Grove Heights (Minnesota) | 1,534.81 mi (2,470.04 km) |
| National City to Inwood (New York) | 2,439.51 mi (3,926.01 km) |
| National City to Iona (Florida) | 2,143.39 mi (3,449.46 km) |
| National City to Ionia (Michigan) | 1,873.29 mi (3,014.77 km) |
| National City to Iowa City (Iowa) | 1,531.25 mi (2,464.31 km) |
| National City to Irmo (South Carolina) | 2,063.08 mi (3,320.20 km) |
| National City to Irondale (Alabama) | 1,756.38 mi (2,826.61 km) |
| National City to Ironton (Ohio) | 1,963.81 mi (3,160.45 km) |
| National City to Irvine (California) | 80.08 mi (128.88 km) |
| National City to Irving (Texas) | 1,167.79 mi (1,879.38 km) |
