| Romeoville to Clemson (South Carolina) | 559.17 mi (899.89 km) |
| Romeoville to Clermont (Florida) | 973.54 mi (1,566.77 km) |
| Romeoville to Cleveland (Mississippi) | 563.55 mi (906.94 km) |
| Romeoville to Cleveland (Ohio) | 332.00 mi (534.30 km) |
| Romeoville to Cleveland (Tennessee) | 478.62 mi (770.27 km) |
| Romeoville to Cleveland Heights (Ohio) | 337.88 mi (543.76 km) |
| Romeoville to Cliffside Park (New Jersey) | 734.63 mi (1,182.27 km) |
| Romeoville to Clifton (Colorado) | 1,083.87 mi (1,744.32 km) |
| Romeoville to Clifton (New Jersey) | 725.44 mi (1,167.48 km) |
| Romeoville to Clinton (Iowa) | 111.37 mi (179.24 km) |
| Romeoville to Clinton (Maryland) | 622.89 mi (1,002.44 km) |
| Romeoville to Clinton (Mississippi) | 652.78 mi (1,050.55 km) |
| Romeoville to Clinton (Utah) | 1,238.83 mi (1,993.71 km) |
| Romeoville to Clive (Iowa) | 294.26 mi (473.57 km) |
| Romeoville to Cloquet (Minnesota) | 413.45 mi (665.39 km) |
