| Potomac to Brie-Comte-Robert | 3,847.89 mi (6,192.58 km) |
| Potomac to Brignais | 4,023.92 mi (6,475.87 km) |
| Potomac to Brignoles | 4,150.78 mi (6,680.04 km) |
| Potomac to Brive-la-Gaillarde | 3,896.49 mi (6,270.79 km) |
| Potomac to Bron | 4,028.96 mi (6,483.98 km) |
| Potomac to Bruay-sur-l'Escaut | 3,842.44 mi (6,183.82 km) |
| Potomac to Bruges | 3,807.86 mi (6,128.15 km) |
| Potomac to Brumath | 4,059.59 mi (6,533.28 km) |
| Potomac to Brunoy | 3,843.24 mi (6,185.10 km) |
| Potomac to Bruz | 3,678.03 mi (5,919.22 km) |
| Potomac to Bry-sur-Marne | 3,840.27 mi (6,180.32 km) |
| Potomac to Bully-les-Mines | 3,807.94 mi (6,128.29 km) |
| Potomac to Bures-sur-Yvette | 3,828.77 mi (6,161.82 km) |
| Potomac to Bussy-Saint-Georges | 3,847.66 mi (6,192.21 km) |
| Potomac to Buxerolles | 3,805.20 mi (6,123.88 km) |
