| Rhondda to Delhi (California) | 5,218.76 mi (8,398.78 km) |
| Rhondda to Delray Beach (Florida) | 4,248.38 mi (6,837.10 km) |
| Rhondda to Deltona (Florida) | 4,173.91 mi (6,717.25 km) |
| Rhondda to Deming (New Mexico) | 5,060.11 mi (8,143.45 km) |
| Rhondda to Denison (Texas) | 4,558.13 mi (7,335.60 km) |
| Rhondda to Dent (Ohio) | 3,824.10 mi (6,154.30 km) |
| Rhondda to Denton (Texas) | 4,607.97 mi (7,415.81 km) |
| Rhondda to Dentsville (South Carolina) | 3,912.11 mi (6,295.93 km) |
| Rhondda to Denver (Colorado) | 4,561.01 mi (7,340.24 km) |
| Rhondda to Depew (New York) | 3,421.33 mi (5,506.10 km) |
| Rhondda to Derby (Connecticut) | 3,260.03 mi (5,246.50 km) |
| Rhondda to Derby (Kansas) | 4,393.33 mi (7,070.39 km) |
| Rhondda to Des Moines (Iowa) | 4,060.11 mi (6,534.12 km) |
| Rhondda to Des Moines (Washington) | 4,701.87 mi (7,566.93 km) |
| Rhondda to Des Plaines (Illinois) | 3,821.26 mi (6,149.72 km) |
