| Katy to Des Plaines (Illinois) | 954.35 mi (1,535.88 km) |
| Katy to Desert Hot Springs (California) | 1,246.26 mi (2,005.67 km) |
| Katy to DeSoto (Texas) | 203.35 mi (327.26 km) |
| Katy to Destin (Florida) | 561.25 mi (903.25 km) |
| Katy to Destrehan (Louisiana) | 327.76 mi (527.48 km) |
| Katy to Detroit (Michigan) | 1,120.93 mi (1,803.96 km) |
| Katy to Diamond Bar (California) | 1,319.02 mi (2,122.76 km) |
| Katy to Diamond Springs (California) | 1,548.45 mi (2,492.00 km) |
| Katy to Dickinson (North Dakota) | 1,239.02 mi (1,994.01 km) |
| Katy to Dickinson (Texas) | 52.08 mi (83.82 km) |
| Katy to Dickson (Tennessee) | 654.53 mi (1,053.37 km) |
| Katy to Difficult Run (Virginia) | 1,224.71 mi (1,970.99 km) |
| Katy to Dinuba (California) | 1,436.05 mi (2,311.10 km) |
| Katy to Discovery Bay (California) | 1,574.78 mi (2,534.36 km) |
| Katy to Dix Hills (New York) | 1,472.80 mi (2,370.25 km) |
