| Rhondda to Bilecik | 1,770.53 mi (2,849.39 km) |
| Rhondda to Bingol | 2,268.63 mi (3,651.01 km) |
| Rhondda to Birecik | 2,241.76 mi (3,607.77 km) |
| Rhondda to Bitlis | 2,357.81 mi (3,794.52 km) |
| Rhondda to Bodrum | 1,806.15 mi (2,906.72 km) |
| Rhondda to Bogazliyan | 2,032.15 mi (3,270.43 km) |
| Rhondda to Bolu | 1,814.23 mi (2,919.72 km) |
| Rhondda to Bolvadin | 1,876.77 mi (3,020.37 km) |
| Rhondda to Bor | 2,060.25 mi (3,315.65 km) |
| Rhondda to Borcka | 2,218.95 mi (3,571.05 km) |
| Rhondda to Boyabat | 1,919.22 mi (3,088.69 km) |
| Rhondda to Bozdogan | 1,811.78 mi (2,915.77 km) |
| Rhondda to Bozkir | 1,994.91 mi (3,210.50 km) |
| Rhondda to Bozkurt | 1,858.21 mi (2,990.51 km) |
| Rhondda to Bozuyuk | 1,782.93 mi (2,869.34 km) |
