| Rhondda to Bailey's Crossroads (Virginia) | 3,534.02 mi (5,687.45 km) |
| Rhondda to Bainbridge (Georgia) | 4,215.99 mi (6,784.99 km) |
| Rhondda to Bainbridge Island (Washington) | 4,693.96 mi (7,554.19 km) |
| Rhondda to Baker (Louisiana) | 4,502.95 mi (7,246.80 km) |
| Rhondda to Bakersfield (California) | 5,281.00 mi (8,498.95 km) |
| Rhondda to Balch Springs (Texas) | 4,612.77 mi (7,423.54 km) |
| Rhondda to Baldwin (New York) | 3,310.22 mi (5,327.28 km) |
| Rhondda to Baldwin (Pennsylvania) | 3,582.31 mi (5,765.17 km) |
| Rhondda to Baldwin Park (California) | 5,317.71 mi (8,558.03 km) |
| Rhondda to Ballenger Creek (Maryland) | 3,522.31 mi (5,668.60 km) |
| Rhondda to Ballwin (Missouri) | 4,084.70 mi (6,573.69 km) |
| Rhondda to Baltimore (Maryland) | 3,492.51 mi (5,620.66 km) |
| Rhondda to Bangor (Maine) | 2,943.08 mi (4,736.42 km) |
| Rhondda to Banning (California) | 5,289.59 mi (8,512.77 km) |
| Rhondda to Baraboo (Wisconsin) | 3,826.07 mi (6,157.46 km) |
