| Romeoville to Indianapolis (Indiana) | 163.99 mi (263.91 km) |
| Romeoville to Indianola (Iowa) | 283.40 mi (456.09 km) |
| Romeoville to Indio (California) | 1,623.59 mi (2,612.91 km) |
| Romeoville to Inglewood (California) | 1,724.10 mi (2,774.66 km) |
| Romeoville to Inkster (Michigan) | 250.01 mi (402.35 km) |
| Romeoville to Inver Grove Heights (Minnesota) | 333.08 mi (536.04 km) |
| Romeoville to Inwood (New York) | 749.18 mi (1,205.68 km) |
| Romeoville to Iona (Florida) | 1,101.13 mi (1,772.10 km) |
| Romeoville to Ionia (Michigan) | 180.45 mi (290.40 km) |
| Romeoville to Iowa City (Iowa) | 177.13 mi (285.06 km) |
| Romeoville to Irmo (South Carolina) | 641.76 mi (1,032.82 km) |
| Romeoville to Irondale (Alabama) | 564.32 mi (908.19 km) |
| Romeoville to Ironton (Ohio) | 357.67 mi (575.61 km) |
| Romeoville to Irvine (California) | 1,703.77 mi (2,741.95 km) |
| Romeoville to Irving (Texas) | 777.21 mi (1,250.80 km) |
