| North Potomac to Belvedere Marittimo | 4,719.11 mi (7,594.67 km) |
| North Potomac to Benevento | 4,614.25 mi (7,425.92 km) |
| North Potomac to Bergamo | 4,234.02 mi (6,813.99 km) |
| North Potomac to Bernalda | 4,724.58 mi (7,603.48 km) |
| North Potomac to Bertinoro | 4,391.11 mi (7,066.80 km) |
| North Potomac to Besana in Brianza | 4,217.35 mi (6,787.17 km) |
| North Potomac to Besozzo | 4,186.21 mi (6,737.05 km) |
| North Potomac to Biancavilla | 4,749.29 mi (7,643.25 km) |
| North Potomac to Biassono | 4,218.78 mi (6,789.47 km) |
| North Potomac to Bibbiano | 4,301.91 mi (6,923.26 km) |
| North Potomac to Bibbiena | 4,392.97 mi (7,069.80 km) |
| North Potomac to Biella | 4,169.41 mi (6,710.01 km) |
| North Potomac to Bisceglie | 4,685.36 mi (7,540.37 km) |
| North Potomac to Bisignano | 4,741.42 mi (7,630.57 km) |
| North Potomac to Bitetto | 4,703.97 mi (7,570.31 km) |
