| Grayslake to Indianola (Iowa) | 292.52 mi (470.77 km) |
| Grayslake to Indio (California) | 1,636.41 mi (2,633.54 km) |
| Grayslake to Inglewood (California) | 1,734.85 mi (2,791.97 km) |
| Grayslake to Inkster (Michigan) | 241.08 mi (387.99 km) |
| Grayslake to Inver Grove Heights (Minnesota) | 304.43 mi (489.93 km) |
| Grayslake to Inwood (New York) | 747.89 mi (1,203.61 km) |
| Grayslake to Iona (Florida) | 1,146.03 mi (1,844.36 km) |
| Grayslake to Ionia (Michigan) | 156.75 mi (252.26 km) |
| Grayslake to Iowa City (Iowa) | 185.65 mi (298.77 km) |
| Grayslake to Irmo (South Carolina) | 679.02 mi (1,092.78 km) |
| Grayslake to Irondale (Alabama) | 612.35 mi (985.48 km) |
| Grayslake to Ironton (Ohio) | 385.29 mi (620.06 km) |
| Grayslake to Irvine (California) | 1,715.45 mi (2,760.75 km) |
| Grayslake to Irving (Texas) | 816.61 mi (1,314.20 km) |
| Grayslake to Isabela (Puerto Rico) | 2,056.64 mi (3,309.85 km) |
