| Romeoville to Central Point (Oregon) | 1,775.49 mi (2,857.37 km) |
| Romeoville to Centralia (Illinois) | 221.54 mi (356.54 km) |
| Romeoville to Centralia (Washington) | 1,748.29 mi (2,813.60 km) |
| Romeoville to Centreville (Virginia) | 594.01 mi (955.97 km) |
| Romeoville to Ceres (California) | 1,760.36 mi (2,833.02 km) |
| Romeoville to Cerritos (California) | 1,712.78 mi (2,756.45 km) |
| Romeoville to Chalco (Nebraska) | 417.43 mi (671.79 km) |
| Romeoville to Chalmette (Louisiana) | 814.25 mi (1,310.41 km) |
| Romeoville to Chambersburg (Pennsylvania) | 558.52 mi (898.85 km) |
| Romeoville to Chamblee (Georgia) | 573.96 mi (923.70 km) |
| Romeoville to Champaign (Illinois) | 105.25 mi (169.38 km) |
| Romeoville to Champlin (Minnesota) | 360.84 mi (580.71 km) |
| Romeoville to Chandler (Arizona) | 1,418.61 mi (2,283.03 km) |
| Romeoville to Chanhassen (Minnesota) | 353.65 mi (569.15 km) |
| Romeoville to Channahon (Illinois) | 16.76 mi (26.97 km) |
