| Swansea to Barking | 4,202.78 mi (6,763.72 km) |
| Swansea to Barnet | 4,188.82 mi (6,741.26 km) |
| Swansea to Barnoldswick | 4,047.28 mi (6,513.47 km) |
| Swansea to Barnsley | 4,083.93 mi (6,572.45 km) |
| Swansea to Barnstaple | 4,054.58 mi (6,525.22 km) |
| Swansea to Barrhead | 3,916.77 mi (6,303.43 km) |
| Swansea to Barri | 4,076.54 mi (6,560.55 km) |
| Swansea to Barrow in Furness | 4,003.27 mi (6,442.64 km) |
| Swansea to Barton upon Humber | 4,118.55 mi (6,628.17 km) |
| Swansea to Barton upon Irwell | 4,053.11 mi (6,522.84 km) |
| Swansea to Barwell | 4,117.38 mi (6,626.29 km) |
| Swansea to Basford | 4,112.17 mi (6,617.90 km) |
| Swansea to Basildon | 4,217.30 mi (6,787.10 km) |
| Swansea to Basingstoke | 4,165.90 mi (6,704.37 km) |
| Swansea to Bath | 4,112.91 mi (6,619.09 km) |
