| Pontypridd to Dumas (Texas) | 4,659.64 mi (7,498.96 km) |
| Pontypridd to Dumont (New Jersey) | 3,316.94 mi (5,338.10 km) |
| Pontypridd to Duncan (Oklahoma) | 4,574.12 mi (7,361.34 km) |
| Pontypridd to Duncanville (Texas) | 4,631.53 mi (7,453.73 km) |
| Pontypridd to Dundalk (Maryland) | 3,492.47 mi (5,620.59 km) |
| Pontypridd to Dunedin (Florida) | 4,286.95 mi (6,899.18 km) |
| Pontypridd to Dunkirk (New York) | 3,468.20 mi (5,581.53 km) |
| Pontypridd to Dunmore (Pennsylvania) | 3,363.14 mi (5,412.46 km) |
| Pontypridd to Dunwoody (Georgia) | 4,060.68 mi (6,535.03 km) |
| Pontypridd to Durango (Colorado) | 4,800.81 mi (7,726.16 km) |
| Pontypridd to Durant (Oklahoma) | 4,542.59 mi (7,310.59 km) |
| Pontypridd to Durham (North Carolina) | 3,740.92 mi (6,020.44 km) |
| Pontypridd to Dyer (Indiana) | 3,833.94 mi (6,170.13 km) |
| Pontypridd to Dyersburg (Tennessee) | 4,164.36 mi (6,701.89 km) |
| Pontypridd to Eagan (Minnesota) | 3,895.07 mi (6,268.52 km) |
