| North Potomac to Barberino di Mugello | 4,357.65 mi (7,012.96 km) |
| North Potomac to Barcellona-Pozzo di Gotto | 4,746.02 mi (7,637.99 km) |
| North Potomac to Bareggio | 4,211.99 mi (6,778.54 km) |
| North Potomac to Barga | 4,322.35 mi (6,956.16 km) |
| North Potomac to Bari | 4,705.54 mi (7,572.83 km) |
| North Potomac to Barletta | 4,672.93 mi (7,520.36 km) |
| North Potomac to Baronissi | 4,628.06 mi (7,448.14 km) |
| North Potomac to Barrafranca | 4,729.67 mi (7,611.67 km) |
| North Potomac to Bassano del Grappa | 4,319.19 mi (6,951.06 km) |
| North Potomac to Battipaglia | 4,642.27 mi (7,471.02 km) |
| North Potomac to Beinasco | 4,165.82 mi (6,704.25 km) |
| North Potomac to Bellinzago Novarese | 4,193.24 mi (6,748.37 km) |
| North Potomac to Belluno | 4,326.92 mi (6,963.51 km) |
| North Potomac to Belmonte Mezzagno | 4,666.47 mi (7,509.96 km) |
| North Potomac to Belpasso | 4,757.16 mi (7,655.91 km) |
