| Katy to Cordele (Georgia) | 730.60 mi (1,175.78 km) |
| Katy to Corinth (Mississippi) | 556.00 mi (894.80 km) |
| Katy to Corinth (Texas) | 242.78 mi (390.72 km) |
| Katy to Cornelius (North Carolina) | 953.21 mi (1,534.05 km) |
| Katy to Cornelius (Oregon) | 1,828.28 mi (2,942.32 km) |
| Katy to Corning (New York) | 1,348.02 mi (2,169.44 km) |
| Katy to Corona (California) | 1,303.62 mi (2,097.98 km) |
| Katy to Coronado (California) | 1,273.27 mi (2,049.14 km) |
| Katy to Corpus Christi (Texas) | 170.51 mi (274.41 km) |
| Katy to Corsicana (Texas) | 162.71 mi (261.86 km) |
| Katy to Cortland (New York) | 1,402.66 mi (2,257.36 km) |
| Katy to Corvallis (Oregon) | 1,809.46 mi (2,912.05 km) |
| Katy to Coshocton (Ohio) | 1,069.77 mi (1,721.63 km) |
| Katy to Costa Mesa (California) | 1,322.11 mi (2,127.73 km) |
| Katy to Coto de Caza (California) | 1,302.88 mi (2,096.78 km) |
