| Rockford to Cullman (Alabama) | 571.25 mi (919.34 km) |
| Rockford to Culpeper (Virginia) | 637.94 mi (1,026.66 km) |
| Rockford to Culver City (California) | 1,683.03 mi (2,708.58 km) |
| Rockford to Cumberland (Maryland) | 566.70 mi (912.02 km) |
| Rockford to Cupertino (California) | 1,772.57 mi (2,852.67 km) |
| Rockford to Cutler Bay (Florida) | 1,254.91 mi (2,019.59 km) |
| Rockford to Cutlerville (Michigan) | 177.17 mi (285.13 km) |
| Rockford to Cuyahoga Falls (Ohio) | 396.22 mi (637.66 km) |
| Rockford to Cypress (California) | 1,671.28 mi (2,689.67 km) |
| Rockford to Cypress Gardens (Florida) | 1,068.51 mi (1,719.61 km) |
| Rockford to Cypress Lake (Florida) | 1,159.31 mi (1,865.72 km) |
| Rockford to D'Iberville (Mississippi) | 814.57 mi (1,310.92 km) |
| Rockford to Dakota Ridge (Colorado) | 856.98 mi (1,379.18 km) |
| Rockford to Dale City (Virginia) | 664.00 mi (1,068.60 km) |
| Rockford to Dallas (Georgia) | 620.36 mi (998.38 km) |
