| Potomac to Bagnolet | 3,835.15 mi (6,172.09 km) |
| Potomac to Bagnols-sur-Ceze | 4,063.09 mi (6,538.91 km) |
| Potomac to Bailleul | 3,800.99 mi (6,117.11 km) |
| Potomac to Balma | 3,938.93 mi (6,339.10 km) |
| Potomac to Bar-le-Duc | 3,953.04 mi (6,361.80 km) |
| Potomac to Barentin | 3,756.61 mi (6,045.67 km) |
| Potomac to Basse-Goulaine | 3,709.85 mi (5,970.42 km) |
| Potomac to Bastia | 4,324.63 mi (6,959.82 km) |
| Potomac to Bayeux | 3,693.08 mi (5,943.43 km) |
| Potomac to Bayonne | 3,806.08 mi (6,125.29 km) |
| Potomac to Beaucaire | 4,074.92 mi (6,557.95 km) |
| Potomac to Beauchamp | 3,821.82 mi (6,150.63 km) |
| Potomac to Beaumont | 3,948.44 mi (6,354.40 km) |
| Potomac to Beaumont-sur-Oise | 3,822.58 mi (6,151.85 km) |
| Potomac to Beaune | 3,988.40 mi (6,418.71 km) |
