| Castle Rock to Dardenne Prairie (Missouri) | 757.99 mi (1,219.87 km) |
| Castle Rock to Darien (Illinois) | 899.06 mi (1,446.89 km) |
| Castle Rock to Davenport (Iowa) | 763.02 mi (1,227.96 km) |
| Castle Rock to Davidson (North Carolina) | 1,341.31 mi (2,158.63 km) |
| Castle Rock to Davie (Florida) | 1,689.16 mi (2,718.43 km) |
| Castle Rock to Davis (California) | 907.46 mi (1,460.41 km) |
| Castle Rock to Dayton (Nevada) | 785.57 mi (1,264.25 km) |
| Castle Rock to Dayton (Ohio) | 1,097.78 mi (1,766.70 km) |
| Castle Rock to Daytona Beach (Florida) | 1,520.97 mi (2,447.77 km) |
| Castle Rock to De Pere (Wisconsin) | 928.48 mi (1,494.25 km) |
| Castle Rock to De Witt (New York) | 1,509.19 mi (2,428.80 km) |
| Castle Rock to Dearborn (Michigan) | 1,145.91 mi (1,844.17 km) |
| Castle Rock to Dearborn Heights (Michigan) | 1,142.67 mi (1,838.94 km) |
| Castle Rock to DeBary (Florida) | 1,522.05 mi (2,449.51 km) |
| Castle Rock to Decatur (Alabama) | 1,038.25 mi (1,670.90 km) |
