| Castle Rock to Delhi (California) | 871.36 mi (1,402.32 km) |
| Castle Rock to Delray Beach (Florida) | 1,682.43 mi (2,707.61 km) |
| Castle Rock to Deltona (Florida) | 1,526.63 mi (2,456.87 km) |
| Castle Rock to Deming (New Mexico) | 517.53 mi (832.88 km) |
| Castle Rock to Denison (Texas) | 600.29 mi (966.07 km) |
| Castle Rock to Dent (Ohio) | 1,077.75 mi (1,734.47 km) |
| Castle Rock to Denton (Texas) | 604.09 mi (972.20 km) |
| Castle Rock to Dentsville (South Carolina) | 1,368.67 mi (2,202.66 km) |
| Castle Rock to Denver (Colorado) | 26.68 mi (42.93 km) |
| Castle Rock to Depew (New York) | 1,376.54 mi (2,215.33 km) |
| Castle Rock to Derby (Connecticut) | 1,668.92 mi (2,685.87 km) |
| Castle Rock to Derby (Kansas) | 429.69 mi (691.51 km) |
| Castle Rock to Des Moines (Iowa) | 609.59 mi (981.05 km) |
| Castle Rock to Des Moines (Washington) | 1,033.50 mi (1,663.26 km) |
| Castle Rock to Des Plaines (Illinois) | 905.13 mi (1,456.67 km) |
