| Rhondda to Blumberg | 593.21 mi (954.69 km) |
| Rhondda to Bobenheim-Roxheim | 534.63 mi (860.41 km) |
| Rhondda to Bobingen | 672.58 mi (1,082.41 km) |
| Rhondda to Boblingen | 585.59 mi (942.42 km) |
| Rhondda to Bocholt | 429.38 mi (691.02 km) |
| Rhondda to Bochum | 456.56 mi (734.75 km) |
| Rhondda to Bockenem | 578.57 mi (931.11 km) |
| Rhondda to Bockhorn | 495.80 mi (797.91 km) |
| Rhondda to Bogen | 733.47 mi (1,180.41 km) |
| Rhondda to Bohl-Iggelheim | 537.56 mi (865.11 km) |
| Rhondda to Bohmte | 501.37 mi (806.88 km) |
| Rhondda to Boizenburg | 605.73 mi (974.83 km) |
| Rhondda to Bonen | 479.13 mi (771.08 km) |
| Rhondda to Bonn | 459.25 mi (739.09 km) |
| Rhondda to Bopfingen | 636.56 mi (1,024.45 km) |
