| Romeoville to Conyers (Georgia) | 594.29 mi (956.42 km) |
| Romeoville to Cookeville (Tennessee) | 403.59 mi (649.52 km) |
| Romeoville to Coolidge (Arizona) | 1,414.95 mi (2,277.14 km) |
| Romeoville to Coon Rapids (Minnesota) | 358.10 mi (576.31 km) |
| Romeoville to Cooper City (Florida) | 1,165.19 mi (1,875.19 km) |
| Romeoville to Coos Bay (Oregon) | 1,830.04 mi (2,945.17 km) |
| Romeoville to Copiague (New York) | 767.10 mi (1,234.53 km) |
| Romeoville to Coppell (Texas) | 772.03 mi (1,242.47 km) |
| Romeoville to Copperas Cove (Texas) | 907.31 mi (1,460.17 km) |
| Romeoville to Coral Gables (Florida) | 1,187.70 mi (1,911.42 km) |
| Romeoville to Coral Springs (Florida) | 1,151.31 mi (1,852.85 km) |
| Romeoville to Coral Terrace (Florida) | 1,184.22 mi (1,905.82 km) |
| Romeoville to Coralville (Iowa) | 180.55 mi (290.56 km) |
| Romeoville to Coram (New York) | 784.71 mi (1,262.87 km) |
| Romeoville to Corcoran (California) | 1,725.38 mi (2,776.72 km) |
