| Bargoed to Decatur (Georgia) | 4,070.71 mi (6,551.18 km) |
| Bargoed to Decatur (Illinois) | 3,966.81 mi (6,383.96 km) |
| Bargoed to Deer Park (New York) | 3,299.62 mi (5,310.22 km) |
| Bargoed to Deer Park (Texas) | 4,713.61 mi (7,585.83 km) |
| Bargoed to Deerfield (Illinois) | 3,817.99 mi (6,144.46 km) |
| Bargoed to Deerfield Beach (Florida) | 4,264.37 mi (6,862.84 km) |
| Bargoed to Defiance (Ohio) | 3,722.37 mi (5,990.57 km) |
| Bargoed to DeForest (Wisconsin) | 3,826.35 mi (6,157.91 km) |
| Bargoed to DeKalb (Illinois) | 3,863.14 mi (6,217.13 km) |
| Bargoed to Del Aire (California) | 5,342.83 mi (8,598.46 km) |
| Bargoed to Del City (Oklahoma) | 4,510.82 mi (7,259.47 km) |
| Bargoed to Del Rio (Texas) | 4,958.03 mi (7,979.17 km) |
| Bargoed to DeLand (Florida) | 4,177.76 mi (6,723.46 km) |
| Bargoed to Delano (California) | 5,267.35 mi (8,476.99 km) |
| Bargoed to Delaware (Ohio) | 3,716.14 mi (5,980.55 km) |
