| Katy to Cibolo (Texas) | 143.50 mi (230.94 km) |
| Katy to Cicero (Illinois) | 946.74 mi (1,523.63 km) |
| Katy to Cimarron Hills (Colorado) | 804.39 mi (1,294.54 km) |
| Katy to Cincinnati (Ohio) | 911.73 mi (1,467.29 km) |
| Katy to Cinco Ranch (Texas) | 5.70 mi (9.17 km) |
| Katy to Circleville (Ohio) | 996.57 mi (1,603.83 km) |
| Katy to Citrus (California) | 1,324.13 mi (2,130.98 km) |
| Katy to Citrus Heights (California) | 1,571.83 mi (2,529.61 km) |
| Katy to Citrus Park (Florida) | 810.84 mi (1,304.92 km) |
| Katy to Claiborne (Louisiana) | 286.80 mi (461.56 km) |
| Katy to Claremont (California) | 1,314.35 mi (2,115.24 km) |
| Katy to Claremont (New Hampshire) | 1,597.30 mi (2,570.60 km) |
| Katy to Claremore (Oklahoma) | 450.96 mi (725.75 km) |
| Katy to Clarksburg (Maryland) | 1,238.32 mi (1,992.88 km) |
| Katy to Clarksburg (West Virginia) | 1,097.30 mi (1,765.93 km) |
