| Katy to Cullman (Alabama) | 607.69 mi (977.98 km) |
| Katy to Culpeper (Virginia) | 1,180.15 mi (1,899.27 km) |
| Katy to Culver City (California) | 1,352.12 mi (2,176.03 km) |
| Katy to Cumberland (Maryland) | 1,181.85 mi (1,902.01 km) |
| Katy to Cupertino (California) | 1,590.08 mi (2,558.98 km) |
| Katy to Cutler Bay (Florida) | 991.05 mi (1,594.94 km) |
| Katy to Cutlerville (Michigan) | 1,062.60 mi (1,710.09 km) |
| Katy to Cuyahoga Falls (Ohio) | 1,122.37 mi (1,806.28 km) |
| Katy to Cypress (California) | 1,330.31 mi (2,140.93 km) |
| Katy to Cypress Gardens (Florida) | 864.20 mi (1,390.80 km) |
| Katy to Cypress Lake (Florida) | 877.40 mi (1,412.04 km) |
| Katy to D'Iberville (Mississippi) | 416.96 mi (671.03 km) |
| Katy to Dakota Ridge (Colorado) | 859.24 mi (1,382.82 km) |
| Katy to Dale City (Virginia) | 1,217.36 mi (1,959.15 km) |
| Katy to Dallas (Georgia) | 704.81 mi (1,134.28 km) |
