| Diamond Bar to Darby (Pennsylvania) | 2,362.11 mi (3,801.44 km) |
| Diamond Bar to Dardenne Prairie (Missouri) | 1,536.09 mi (2,472.10 km) |
| Diamond Bar to Darien (Illinois) | 1,702.90 mi (2,740.56 km) |
| Diamond Bar to Davenport (Iowa) | 1,567.20 mi (2,522.16 km) |
| Diamond Bar to Davidson (North Carolina) | 2,090.43 mi (3,364.23 km) |
| Diamond Bar to Davie (Florida) | 2,296.87 mi (3,696.45 km) |
| Diamond Bar to Davis (California) | 383.04 mi (616.45 km) |
| Diamond Bar to Dayton (Nevada) | 376.13 mi (605.32 km) |
| Diamond Bar to Dayton (Ohio) | 1,888.41 mi (3,039.10 km) |
| Diamond Bar to Daytona Beach (Florida) | 2,174.44 mi (3,499.42 km) |
| Diamond Bar to De Pere (Wisconsin) | 1,734.82 mi (2,791.93 km) |
| Diamond Bar to De Witt (New York) | 2,315.11 mi (3,725.80 km) |
| Diamond Bar to Dearborn (Michigan) | 1,950.60 mi (3,139.19 km) |
| Diamond Bar to Dearborn Heights (Michigan) | 1,947.38 mi (3,134.00 km) |
| Diamond Bar to DeBary (Florida) | 2,168.49 mi (3,489.85 km) |
