| Pontypridd to Decatur (Georgia) | 4,068.25 mi (6,547.21 km) |
| Pontypridd to Decatur (Illinois) | 3,965.38 mi (6,381.66 km) |
| Pontypridd to Deer Park (New York) | 3,297.07 mi (5,306.13 km) |
| Pontypridd to Deer Park (Texas) | 4,711.68 mi (7,582.71 km) |
| Pontypridd to Deerfield (Illinois) | 3,816.74 mi (6,142.44 km) |
| Pontypridd to Deerfield Beach (Florida) | 4,260.83 mi (6,857.14 km) |
| Pontypridd to Defiance (Ohio) | 3,720.74 mi (5,987.95 km) |
| Pontypridd to DeForest (Wisconsin) | 3,825.33 mi (6,156.28 km) |
| Pontypridd to DeKalb (Illinois) | 3,861.93 mi (6,215.18 km) |
| Pontypridd to Del Aire (California) | 5,343.34 mi (8,599.28 km) |
| Pontypridd to Del City (Oklahoma) | 4,509.63 mi (7,257.55 km) |
| Pontypridd to Del Rio (Texas) | 4,956.58 mi (7,976.84 km) |
| Pontypridd to DeLand (Florida) | 4,174.57 mi (6,718.32 km) |
| Pontypridd to Delano (California) | 5,268.08 mi (8,478.16 km) |
| Pontypridd to Delaware (Ohio) | 3,714.30 mi (5,977.58 km) |
