| Pontypridd to Delhi (California) | 5,221.77 mi (8,403.63 km) |
| Pontypridd to Delray Beach (Florida) | 4,251.71 mi (6,842.47 km) |
| Pontypridd to Deltona (Florida) | 4,177.26 mi (6,722.66 km) |
| Pontypridd to Deming (New Mexico) | 5,063.37 mi (8,148.71 km) |
| Pontypridd to Denison (Texas) | 4,561.48 mi (7,340.99 km) |
| Pontypridd to Dent (Ohio) | 3,827.47 mi (6,159.72 km) |
| Pontypridd to Denton (Texas) | 4,611.31 mi (7,421.19 km) |
| Pontypridd to Dentsville (South Carolina) | 3,915.49 mi (6,301.37 km) |
| Pontypridd to Denver (Colorado) | 4,564.22 mi (7,345.41 km) |
| Pontypridd to Depew (New York) | 3,424.70 mi (5,511.52 km) |
| Pontypridd to Derby (Connecticut) | 3,263.40 mi (5,251.94 km) |
| Pontypridd to Derby (Kansas) | 4,396.64 mi (7,075.71 km) |
| Pontypridd to Des Moines (Iowa) | 4,063.41 mi (6,539.43 km) |
| Pontypridd to Des Moines (Washington) | 4,704.68 mi (7,571.45 km) |
| Pontypridd to Des Plaines (Illinois) | 3,824.59 mi (6,155.09 km) |
