| Swansea to Bougival | 4,369.27 mi (7,031.66 km) |
| Swansea to Bouguenais | 4,271.22 mi (6,873.86 km) |
| Swansea to Boulogne-Billancourt | 4,374.30 mi (7,039.76 km) |
| Swansea to Boulogne-sur-Mer | 4,287.61 mi (6,900.25 km) |
| Swansea to Bourg-de-Peage | 4,621.83 mi (7,438.12 km) |
| Swansea to Bourg-en-Bresse | 4,586.47 mi (7,381.21 km) |
| Swansea to Bourg-la-Reine | 4,379.12 mi (7,047.51 km) |
| Swansea to Bourg-les-Valence | 4,618.74 mi (7,433.15 km) |
| Swansea to Bourges | 4,439.99 mi (7,145.47 km) |
| Swansea to Bourgoin-Jallieu | 4,610.92 mi (7,420.56 km) |
| Swansea to Bressuire | 4,329.29 mi (6,967.33 km) |
| Swansea to Brest | 4,114.70 mi (6,621.96 km) |
| Swansea to Bretigny-sur-Orge | 4,384.40 mi (7,056.02 km) |
| Swansea to Breuillet | 4,380.56 mi (7,049.82 km) |
| Swansea to Briancon | 4,692.41 mi (7,551.70 km) |
