| Katy to Cloverleaf (Texas) | 39.75 mi (63.97 km) |
| Katy to Cloverly (Maryland) | 1,247.64 mi (2,007.88 km) |
| Katy to Clovis (California) | 1,455.61 mi (2,342.58 km) |
| Katy to Clovis (New Mexico) | 536.81 mi (863.92 km) |
| Katy to Clute (Texas) | 59.05 mi (95.04 km) |
| Katy to Coachella (California) | 1,221.14 mi (1,965.23 km) |
| Katy to Coalinga (California) | 1,481.20 mi (2,383.76 km) |
| Katy to Coamo (Puerto Rico) | 2,021.62 mi (3,253.48 km) |
| Katy to Coatesville (Pennsylvania) | 1,330.51 mi (2,141.25 km) |
| Katy to Cockeysville (Maryland) | 1,276.63 mi (2,054.54 km) |
| Katy to Cocoa (Florida) | 914.32 mi (1,471.45 km) |
| Katy to Cocoa Beach (Florida) | 923.29 mi (1,485.90 km) |
| Katy to Coconut Creek (Florida) | 983.92 mi (1,583.46 km) |
| Katy to Coeur d'Alene (Idaho) | 1,664.67 mi (2,679.03 km) |
| Katy to Cohoes (New York) | 1,516.52 mi (2,440.60 km) |
