| Potomac to Bastogne | 3,941.97 mi (6,343.98 km) |
| Potomac to Beauraing | 3,907.96 mi (6,289.26 km) |
| Potomac to Beernem | 3,815.61 mi (6,140.63 km) |
| Potomac to Beerse | 3,872.63 mi (6,232.40 km) |
| Potomac to Beersel | 3,864.42 mi (6,219.18 km) |
| Potomac to Begijnendijk | 3,877.06 mi (6,239.53 km) |
| Potomac to Beloeil | 3,846.24 mi (6,189.93 km) |
| Potomac to Berchem | 3,857.99 mi (6,208.84 km) |
| Potomac to Beringen | 3,894.05 mi (6,266.87 km) |
| Potomac to Berlaar | 3,869.09 mi (6,226.70 km) |
| Potomac to Berlare | 3,845.32 mi (6,188.45 km) |
| Potomac to Bernissart | 3,844.80 mi (6,187.60 km) |
| Potomac to Bertem | 3,874.64 mi (6,235.64 km) |
| Potomac to Bertrix | 3,926.95 mi (6,319.82 km) |
| Potomac to Beveren | 3,850.86 mi (6,197.35 km) |
