| Rock Island to Chicago Ridge (Illinois) | 145.75 mi (234.57 km) |
| Rock Island to Chickasha (Oklahoma) | 597.00 mi (960.79 km) |
| Rock Island to Chico (California) | 1,633.54 mi (2,628.94 km) |
| Rock Island to Chicopee (Massachusetts) | 926.91 mi (1,491.72 km) |
| Rock Island to Chillicothe (Ohio) | 425.36 mi (684.56 km) |
| Rock Island to Chillum (Maryland) | 737.40 mi (1,186.73 km) |
| Rock Island to Chino (California) | 1,560.08 mi (2,510.71 km) |
| Rock Island to Chino Hills (California) | 1,564.18 mi (2,517.30 km) |
| Rock Island to Chino Valley (Arizona) | 1,269.65 mi (2,043.31 km) |
| Rock Island to Chippewa Falls (Wisconsin) | 242.90 mi (390.90 km) |
| Rock Island to Choctaw (Oklahoma) | 549.16 mi (883.80 km) |
| Rock Island to Chowchilla (California) | 1,605.81 mi (2,584.30 km) |
| Rock Island to Christiansburg (Virginia) | 620.40 mi (998.44 km) |
| Rock Island to Chubbuck (Idaho) | 1,121.26 mi (1,804.49 km) |
| Rock Island to Chula Vista (California) | 1,572.40 mi (2,530.53 km) |
