| Rhondda to Bougival | 310.38 mi (499.51 km) |
| Rhondda to Bouguenais | 317.09 mi (510.31 km) |
| Rhondda to Boulogne-Billancourt | 315.24 mi (507.34 km) |
| Rhondda to Boulogne-sur-Mer | 226.45 mi (364.43 km) |
| Rhondda to Bourg-de-Peage | 597.44 mi (961.49 km) |
| Rhondda to Bourg-en-Bresse | 541.45 mi (871.38 km) |
| Rhondda to Bourg-la-Reine | 320.30 mi (515.47 km) |
| Rhondda to Bourg-les-Valence | 597.87 mi (962.17 km) |
| Rhondda to Bourges | 407.79 mi (656.27 km) |
| Rhondda to Bourgoin-Jallieu | 574.79 mi (925.04 km) |
| Rhondda to Bressuire | 355.39 mi (571.94 km) |
| Rhondda to Brest | 227.91 mi (366.79 km) |
| Rhondda to Bretigny-sur-Orge | 327.55 mi (527.15 km) |
| Rhondda to Breuillet | 325.08 mi (523.16 km) |
| Rhondda to Briancon | 654.19 mi (1,052.82 km) |
