| Potomac to Boppard | 4,011.51 mi (6,455.91 km) |
| Potomac to Borgentreich | 4,039.30 mi (6,500.63 km) |
| Potomac to Borgholzhausen | 3,987.24 mi (6,416.85 km) |
| Potomac to Borken | 3,938.44 mi (6,338.31 km) |
| Potomac to Borna | 4,179.20 mi (6,725.78 km) |
| Potomac to Bornheim | 3,973.20 mi (6,394.24 km) |
| Potomac to Bosel | 3,949.21 mi (6,355.63 km) |
| Potomac to Bottrop | 3,948.98 mi (6,355.27 km) |
| Potomac to Bovenden | 4,064.86 mi (6,541.75 km) |
| Potomac to Brackenheim | 4,104.86 mi (6,606.14 km) |
| Potomac to Brake | 3,960.57 mi (6,373.93 km) |
| Potomac to Brakel | 4,032.41 mi (6,489.54 km) |
| Potomac to Bramsche | 3,966.71 mi (6,383.80 km) |
| Potomac to Brand | 3,939.76 mi (6,340.43 km) |
| Potomac to Brand-Erbisdorf | 4,218.82 mi (6,789.54 km) |
