| Diamond Bar to Dover (New Jersey) | 2,395.14 mi (3,854.61 km) |
| Diamond Bar to Dover (Ohio) | 2,033.15 mi (3,272.04 km) |
| Diamond Bar to Downers Grove (Illinois) | 1,701.63 mi (2,738.52 km) |
| Diamond Bar to Downey (California) | 18.54 mi (29.84 km) |
| Diamond Bar to Dranesville (Virginia) | 2,254.21 mi (3,627.81 km) |
| Diamond Bar to Draper (Utah) | 555.36 mi (893.77 km) |
| Diamond Bar to Drexel Heights (Arizona) | 412.17 mi (663.32 km) |
| Diamond Bar to Drexel Hill (Pennsylvania) | 2,359.72 mi (3,797.60 km) |
| Diamond Bar to Duarte (California) | 13.57 mi (21.83 km) |
| Diamond Bar to Dublin (California) | 343.66 mi (553.07 km) |
| Diamond Bar to Dublin (Georgia) | 2,008.31 mi (3,232.06 km) |
| Diamond Bar to Dublin (Ohio) | 1,944.85 mi (3,129.93 km) |
| Diamond Bar to Dubuque (Iowa) | 1,575.33 mi (2,535.24 km) |
| Diamond Bar to Duluth (Georgia) | 1,919.55 mi (3,089.21 km) |
| Diamond Bar to Duluth (Minnesota) | 1,602.58 mi (2,579.10 km) |
