| Rockford to Central Point (Oregon) | 1,717.64 mi (2,764.27 km) |
| Rockford to Centralia (Illinois) | 258.23 mi (415.59 km) |
| Rockford to Centralia (Washington) | 1,685.78 mi (2,712.99 km) |
| Rockford to Centreville (Virginia) | 653.80 mi (1,052.19 km) |
| Rockford to Ceres (California) | 1,710.15 mi (2,752.22 km) |
| Rockford to Cerritos (California) | 1,671.10 mi (2,689.37 km) |
| Rockford to Chalco (Nebraska) | 372.08 mi (598.81 km) |
| Rockford to Chalmette (Louisiana) | 852.41 mi (1,371.83 km) |
| Rockford to Chambersburg (Pennsylvania) | 614.89 mi (989.56 km) |
| Rockford to Chamblee (Georgia) | 633.76 mi (1,019.93 km) |
| Rockford to Champaign (Illinois) | 153.82 mi (247.55 km) |
| Rockford to Champlin (Minnesota) | 295.08 mi (474.89 km) |
| Rockford to Chandler (Arizona) | 1,384.56 mi (2,228.24 km) |
| Rockford to Chanhassen (Minnesota) | 287.80 mi (463.17 km) |
| Rockford to Channahon (Illinois) | 71.21 mi (114.60 km) |
