| Rockford to Cloverleaf (Texas) | 926.17 mi (1,490.53 km) |
| Rockford to Cloverly (Maryland) | 667.90 mi (1,074.88 km) |
| Rockford to Clovis (California) | 1,664.40 mi (2,678.59 km) |
| Rockford to Clovis (New Mexico) | 935.09 mi (1,504.89 km) |
| Rockford to Clute (Texas) | 980.35 mi (1,577.72 km) |
| Rockford to Coachella (California) | 1,580.74 mi (2,543.95 km) |
| Rockford to Coalinga (California) | 1,715.81 mi (2,761.33 km) |
| Rockford to Coamo (Puerto Rico) | 2,137.49 mi (3,439.96 km) |
| Rockford to Coatesville (Pennsylvania) | 706.23 mi (1,136.56 km) |
| Rockford to Cockeysville (Maryland) | 676.74 mi (1,089.12 km) |
| Rockford to Cocoa (Florida) | 1,065.52 mi (1,714.79 km) |
| Rockford to Cocoa Beach (Florida) | 1,072.08 mi (1,725.34 km) |
| Rockford to Coconut Creek (Florida) | 1,213.20 mi (1,952.46 km) |
| Rockford to Coeur d'Alene (Idaho) | 1,398.03 mi (2,249.92 km) |
| Rockford to Cohoes (New York) | 781.78 mi (1,258.16 km) |
