| Swansea to Beyne-Heusay | 4,445.78 mi (7,154.80 km) |
| Swansea to Bierbeek | 4,404.84 mi (7,088.90 km) |
| Swansea to Bilzen | 4,432.06 mi (7,132.70 km) |
| Swansea to Binche | 4,396.73 mi (7,075.86 km) |
| Swansea to Bissegem | 4,346.34 mi (6,994.75 km) |
| Swansea to Blankenberge | 4,326.55 mi (6,962.92 km) |
| Swansea to Blegny | 4,447.19 mi (7,157.06 km) |
| Swansea to Bocholt | 4,423.84 mi (7,119.48 km) |
| Swansea to Boechout | 4,383.34 mi (7,054.30 km) |
| Swansea to Bonheiden | 4,389.18 mi (7,063.71 km) |
| Swansea to Boom | 4,381.18 mi (7,050.84 km) |
| Swansea to Boortmeerbeek | 4,392.15 mi (7,068.48 km) |
| Swansea to Borgerhout | 4,379.64 mi (7,048.35 km) |
| Swansea to Borgloon | 4,427.74 mi (7,125.76 km) |
| Swansea to Bornem | 4,375.57 mi (7,041.80 km) |
