| Cwmbran to Dardenne Prairie (Missouri) | 4,098.42 mi (6,595.77 km) |
| Cwmbran to Darien (Illinois) | 3,851.81 mi (6,198.89 km) |
| Cwmbran to Davenport (Iowa) | 3,961.03 mi (6,374.66 km) |
| Cwmbran to Davidson (North Carolina) | 3,855.92 mi (6,205.50 km) |
| Cwmbran to Davie (Florida) | 4,292.15 mi (6,907.55 km) |
| Cwmbran to Davis (California) | 5,194.78 mi (8,360.19 km) |
| Cwmbran to Dayton (Nevada) | 5,088.21 mi (8,188.69 km) |
| Cwmbran to Dayton (Ohio) | 3,793.61 mi (6,105.22 km) |
| Cwmbran to Daytona Beach (Florida) | 4,170.72 mi (6,712.13 km) |
| Cwmbran to De Pere (Wisconsin) | 3,733.93 mi (6,009.17 km) |
| Cwmbran to De Witt (New York) | 3,326.18 mi (5,352.97 km) |
| Cwmbran to Dearborn (Michigan) | 3,640.64 mi (5,859.04 km) |
| Cwmbran to Dearborn Heights (Michigan) | 3,642.99 mi (5,862.82 km) |
| Cwmbran to DeBary (Florida) | 4,195.98 mi (6,752.78 km) |
| Cwmbran to Decatur (Alabama) | 4,151.50 mi (6,681.20 km) |
