| Rhondda to Barberton (Ohio) | 3,619.77 mi (5,825.46 km) |
| Rhondda to Bardstown (Kentucky) | 3,919.71 mi (6,308.17 km) |
| Rhondda to Barrington (Illinois) | 3,824.69 mi (6,155.24 km) |
| Rhondda to Barstow (California) | 5,243.02 mi (8,437.83 km) |
| Rhondda to Bartlesville (Oklahoma) | 4,384.28 mi (7,055.81 km) |
| Rhondda to Bartlett (Illinois) | 3,835.54 mi (6,172.70 km) |
| Rhondda to Bartlett (Tennessee) | 4,218.13 mi (6,788.42 km) |
| Rhondda to Bartow (Florida) | 4,250.16 mi (6,839.97 km) |
| Rhondda to Batavia (Illinois) | 3,845.60 mi (6,188.89 km) |
| Rhondda to Batavia (New York) | 3,396.70 mi (5,466.46 km) |
| Rhondda to Batesville (Arkansas) | 4,263.63 mi (6,861.65 km) |
| Rhondda to Baton Rouge (Louisiana) | 4,508.97 mi (7,256.49 km) |
| Rhondda to Battle Creek (Michigan) | 3,705.73 mi (5,963.79 km) |
| Rhondda to Battle Ground (Washington) | 4,798.79 mi (7,722.91 km) |
| Rhondda to Bay City (Michigan) | 3,596.56 mi (5,788.11 km) |
