| North Potomac to Bitonto | 4,697.90 mi (7,560.53 km) |
| North Potomac to Bitritto | 4,706.95 mi (7,575.11 km) |
| North Potomac to Bollate | 4,215.04 mi (6,783.45 km) |
| North Potomac to Bologna | 4,345.39 mi (6,993.24 km) |
| North Potomac to Bolzano | 4,278.98 mi (6,886.35 km) |
| North Potomac to Bomporto | 4,324.03 mi (6,958.86 km) |
| North Potomac to Bonate di Sopra | 4,229.99 mi (6,807.51 km) |
| North Potomac to Bondeno | 4,335.40 mi (6,977.15 km) |
| North Potomac to Bordighera | 4,208.79 mi (6,773.40 km) |
| North Potomac to Borgaro Torinese | 4,164.52 mi (6,702.15 km) |
| North Potomac to Borgo a Buggiano | 4,339.74 mi (6,984.13 km) |
| North Potomac to Borgo San Dalmazzo | 4,183.11 mi (6,732.06 km) |
| North Potomac to Borgo San Lorenzo | 4,365.64 mi (7,025.81 km) |
| North Potomac to Borgomanero | 4,182.39 mi (6,730.91 km) |
| North Potomac to Borgoricco | 4,337.40 mi (6,980.38 km) |
