| Castle Rock to Desert Hot Springs (California) | 747.44 mi (1,202.88 km) |
| Castle Rock to DeSoto (Texas) | 646.60 mi (1,040.60 km) |
| Castle Rock to Destin (Florida) | 1,209.18 mi (1,945.99 km) |
| Castle Rock to Destrehan (Louisiana) | 1,046.79 mi (1,684.64 km) |
| Castle Rock to Detroit (Michigan) | 1,151.81 mi (1,853.66 km) |
| Castle Rock to Diamond Bar (California) | 807.50 mi (1,299.54 km) |
| Castle Rock to Diamond Springs (California) | 858.12 mi (1,381.01 km) |
| Castle Rock to Dickinson (North Dakota) | 529.51 mi (852.17 km) |
| Castle Rock to Dickinson (Texas) | 882.88 mi (1,420.86 km) |
| Castle Rock to Dickson (Tennessee) | 981.03 mi (1,578.81 km) |
| Castle Rock to Difficult Run (Virginia) | 1,468.71 mi (2,363.66 km) |
| Castle Rock to Dinuba (California) | 815.14 mi (1,311.83 km) |
| Castle Rock to Discovery Bay (California) | 908.07 mi (1,461.39 km) |
| Castle Rock to Dix Hills (New York) | 1,659.84 mi (2,671.26 km) |
| Castle Rock to Dixon (California) | 913.34 mi (1,469.88 km) |
