| Rhondda to Dixon (Illinois) | 3,890.70 mi (6,261.47 km) |
| Rhondda to Dobbs Ferry (New York) | 3,305.65 mi (5,319.93 km) |
| Rhondda to Doctor Phillips (Florida) | 4,208.32 mi (6,772.63 km) |
| Rhondda to Dodge City (Kansas) | 4,486.82 mi (7,220.85 km) |
| Rhondda to Dolton (Illinois) | 3,828.07 mi (6,160.69 km) |
| Rhondda to Donna (Texas) | 5,010.73 mi (8,063.98 km) |
| Rhondda to Dorado (Puerto Rico) | 4,067.49 mi (6,546.00 km) |
| Rhondda to Doral (Florida) | 4,291.86 mi (6,907.08 km) |
| Rhondda to Doraville (Georgia) | 4,057.27 mi (6,529.55 km) |
| Rhondda to Dothan (Alabama) | 4,234.42 mi (6,814.64 km) |
| Rhondda to Douglas (Arizona) | 5,174.27 mi (8,327.18 km) |
| Rhondda to Douglas (Georgia) | 4,114.94 mi (6,622.35 km) |
| Rhondda to Douglasville (Georgia) | 4,083.27 mi (6,571.39 km) |
| Rhondda to Dover (Delaware) | 3,453.73 mi (5,558.24 km) |
| Rhondda to Dover (New Hampshire) | 3,093.13 mi (4,977.92 km) |
