| Rockford to Conyers (Georgia) | 654.56 mi (1,053.41 km) |
| Rockford to Cookeville (Tennessee) | 463.01 mi (745.15 km) |
| Rockford to Coolidge (Arizona) | 1,382.16 mi (2,224.37 km) |
| Rockford to Coon Rapids (Minnesota) | 292.39 mi (470.55 km) |
| Rockford to Cooper City (Florida) | 1,225.82 mi (1,972.77 km) |
| Rockford to Coos Bay (Oregon) | 1,770.79 mi (2,849.81 km) |
| Rockford to Copiague (New York) | 817.62 mi (1,315.83 km) |
| Rockford to Coppell (Texas) | 774.25 mi (1,246.03 km) |
| Rockford to Copperas Cove (Texas) | 911.43 mi (1,466.81 km) |
| Rockford to Coral Gables (Florida) | 1,248.17 mi (2,008.74 km) |
| Rockford to Coral Springs (Florida) | 1,212.10 mi (1,950.68 km) |
| Rockford to Coral Terrace (Florida) | 1,244.66 mi (2,003.09 km) |
| Rockford to Coralville (Iowa) | 135.72 mi (218.43 km) |
| Rockford to Coram (New York) | 834.25 mi (1,342.60 km) |
| Rockford to Corcoran (California) | 1,678.53 mi (2,701.33 km) |
