| Diamond Bar to Dumas (Texas) | 906.09 mi (1,458.21 km) |
| Diamond Bar to Dumont (New Jersey) | 2,424.52 mi (3,901.89 km) |
| Diamond Bar to Duncan (Oklahoma) | 1,134.73 mi (1,826.17 km) |
| Diamond Bar to Duncanville (Texas) | 1,208.35 mi (1,944.65 km) |
| Diamond Bar to Dundalk (Maryland) | 2,299.67 mi (3,700.96 km) |
| Diamond Bar to Dunedin (Florida) | 2,104.27 mi (3,386.50 km) |
| Diamond Bar to Dunkirk (New York) | 2,148.91 mi (3,458.33 km) |
| Diamond Bar to Dunmore (Pennsylvania) | 2,339.36 mi (3,764.84 km) |
| Diamond Bar to Dunwoody (Georgia) | 1,911.07 mi (3,075.57 km) |
| Diamond Bar to Durango (Colorado) | 601.60 mi (968.19 km) |
| Diamond Bar to Durant (Oklahoma) | 1,224.96 mi (1,971.39 km) |
| Diamond Bar to Durham (North Carolina) | 2,192.40 mi (3,528.33 km) |
| Diamond Bar to Dyer (Indiana) | 1,724.72 mi (2,775.67 km) |
| Diamond Bar to Dyersburg (Tennessee) | 1,609.59 mi (2,590.39 km) |
| Diamond Bar to Eagan (Minnesota) | 1,504.72 mi (2,421.61 km) |
