| Rock Island to Channelview (Texas) | 845.74 mi (1,361.09 km) |
| Rock Island to Chantilly (Virginia) | 715.33 mi (1,151.21 km) |
| Rock Island to Chaparral (New Mexico) | 1,088.56 mi (1,751.87 km) |
| Rock Island to Chapel Hill (North Carolina) | 729.89 mi (1,174.65 km) |
| Rock Island to Charleston (Illinois) | 186.52 mi (300.17 km) |
| Rock Island to Charleston (South Carolina) | 834.90 mi (1,343.64 km) |
| Rock Island to Charleston (West Virginia) | 520.75 mi (838.06 km) |
| Rock Island to Charlotte (North Carolina) | 682.23 mi (1,097.95 km) |
| Rock Island to Charlottesville (Virginia) | 684.22 mi (1,101.15 km) |
| Rock Island to Chaska (Minnesota) | 276.97 mi (445.75 km) |
| Rock Island to Chatham (Illinois) | 132.62 mi (213.42 km) |
| Rock Island to Chattanooga (Tennessee) | 528.44 mi (850.44 km) |
| Rock Island to Cheat Lake (West Virginia) | 576.18 mi (927.27 km) |
| Rock Island to Chelsea (Alabama) | 602.87 mi (970.22 km) |
| Rock Island to Chelsea (Massachusetts) | 1,004.70 mi (1,616.91 km) |
