| Rhondda to Dillenburg | 509.95 mi (820.69 km) |
| Rhondda to Dillingen | 649.31 mi (1,044.97 km) |
| Rhondda to Dillingen | 472.46 mi (760.36 km) |
| Rhondda to Dingolfing | 732.91 mi (1,179.50 km) |
| Rhondda to Dinkelsbuhl | 629.65 mi (1,013.32 km) |
| Rhondda to Dinklage | 494.60 mi (795.97 km) |
| Rhondda to Dinslaken | 435.39 mi (700.69 km) |
| Rhondda to Dippoldiswalde | 738.76 mi (1,188.92 km) |
| Rhondda to Ditzingen | 583.70 mi (939.37 km) |
| Rhondda to Dobeln | 712.36 mi (1,146.43 km) |
| Rhondda to Doberlug-Kirchhain | 727.01 mi (1,170.01 km) |
| Rhondda to Donaueschingen | 588.02 mi (946.32 km) |
| Rhondda to Donauworth | 659.56 mi (1,061.47 km) |
| Rhondda to Donzdorf | 618.93 mi (996.07 km) |
| Rhondda to Dorfen | 728.21 mi (1,171.94 km) |
