| Katy to Candler-McAfee (Georgia) | 731.16 mi (1,176.69 km) |
| Katy to Caño Martin Peña (Puerto Rico) | 2,027.84 mi (3,263.50 km) |
| Katy to Cañon City (Colorado) | 802.55 mi (1,291.59 km) |
| Katy to Canóvanas (Puerto Rico) | 2,038.51 mi (3,280.66 km) |
| Katy to Canton (Georgia) | 731.90 mi (1,177.87 km) |
| Katy to Canton (Illinois) | 812.58 mi (1,307.72 km) |
| Katy to Canton (Mississippi) | 393.95 mi (634.00 km) |
| Katy to Canton (Ohio) | 1,112.98 mi (1,791.16 km) |
| Katy to Canyon (Texas) | 504.85 mi (812.48 km) |
| Katy to Canyon Lake (California) | 1,285.01 mi (2,068.03 km) |
| Katy to Canyon Lake (Texas) | 145.51 mi (234.18 km) |
| Katy to Cape Coral (Florida) | 869.54 mi (1,399.39 km) |
| Katy to Cape Girardeau (Missouri) | 632.54 mi (1,017.97 km) |
| Katy to Carbondale (Illinois) | 666.32 mi (1,072.34 km) |
| Katy to Carlisle (Pennsylvania) | 1,272.25 mi (2,047.49 km) |
