| Swansea to Brown Deer (Wisconsin) | 336.27 mi (541.17 km) |
| Swansea to Brownsburg (Indiana) | 212.30 mi (341.66 km) |
| Swansea to Brownsville (Florida) | 1,046.43 mi (1,684.07 km) |
| Swansea to Brownsville (Texas) | 970.09 mi (1,561.21 km) |
| Swansea to Brownwood (Texas) | 693.10 mi (1,115.44 km) |
| Swansea to Brunswick (Georgia) | 702.71 mi (1,130.91 km) |
| Swansea to Brunswick (Ohio) | 470.98 mi (757.96 km) |
| Swansea to Brushy Creek (Texas) | 708.73 mi (1,140.59 km) |
| Swansea to Bryan (Texas) | 654.65 mi (1,053.55 km) |
| Swansea to Bryant (Arkansas) | 305.36 mi (491.42 km) |
| Swansea to Bryn Mawr-Skyway (Washington) | 1,727.43 mi (2,780.04 km) |
| Swansea to Buckeye (Arizona) | 1,311.26 mi (2,110.27 km) |
| Swansea to Buckhall (Virginia) | 676.26 mi (1,088.34 km) |
| Swansea to Bucyrus (Ohio) | 404.05 mi (650.26 km) |
| Swansea to Buda (Texas) | 737.06 mi (1,186.18 km) |
