| Hard to Indianola (Iowa) | 4,714.41 mi (7,587.10 km) |
| Hard to Indio (California) | 5,902.68 mi (9,499.45 km) |
| Hard to Inglewood (California) | 5,955.31 mi (9,584.15 km) |
| Hard to Inkster (Michigan) | 4,282.10 mi (6,891.37 km) |
| Hard to Inver Grove Heights (Minnesota) | 4,529.17 mi (7,288.99 km) |
| Hard to Inwood (New York) | 3,967.13 mi (6,384.47 km) |
| Hard to Iona (Florida) | 4,963.60 mi (7,988.14 km) |
| Hard to Ionia (Michigan) | 4,319.56 mi (6,951.66 km) |
| Hard to Iowa City (Iowa) | 4,625.03 mi (7,443.27 km) |
| Hard to Irmo (South Carolina) | 4,569.21 mi (7,353.44 km) |
| Hard to Irondale (Alabama) | 4,823.82 mi (7,763.19 km) |
| Hard to Ironton (Ohio) | 4,426.37 mi (7,123.55 km) |
| Hard to Irvine (California) | 5,954.07 mi (9,582.16 km) |
| Hard to Irving (Texas) | 5,270.28 mi (8,481.70 km) |
| Hard to Isabela (Puerto Rico) | 4,670.24 mi (7,516.03 km) |
