| Cwmbran to Decatur (Georgia) | 4,080.44 mi (6,566.83 km) |
| Cwmbran to Decatur (Illinois) | 3,976.40 mi (6,399.40 km) |
| Cwmbran to Deer Park (New York) | 3,309.34 mi (5,325.88 km) |
| Cwmbran to Deer Park (Texas) | 4,723.29 mi (7,601.40 km) |
| Cwmbran to Deerfield (Illinois) | 3,827.54 mi (6,159.83 km) |
| Cwmbran to Deerfield Beach (Florida) | 4,274.01 mi (6,878.35 km) |
| Cwmbran to Defiance (Ohio) | 3,732.00 mi (6,006.07 km) |
| Cwmbran to DeForest (Wisconsin) | 3,835.83 mi (6,173.18 km) |
| Cwmbran to DeKalb (Illinois) | 3,872.68 mi (6,232.48 km) |
| Cwmbran to Del Aire (California) | 5,351.69 mi (8,612.71 km) |
| Cwmbran to Del City (Oklahoma) | 4,520.36 mi (7,274.81 km) |
| Cwmbran to Del Rio (Texas) | 4,967.62 mi (7,994.62 km) |
| Cwmbran to DeLand (Florida) | 4,187.45 mi (6,739.06 km) |
| Cwmbran to Delano (California) | 5,276.08 mi (8,491.03 km) |
| Cwmbran to Delaware (Ohio) | 3,725.81 mi (5,996.11 km) |
