| Portsmouth to Barberino di Mugello | 742.18 mi (1,194.43 km) |
| Portsmouth to Barcellona-Pozzo di Gotto | 1,182.49 mi (1,903.04 km) |
| Portsmouth to Bareggio | 592.17 mi (953.00 km) |
| Portsmouth to Barga | 711.68 mi (1,145.34 km) |
| Portsmouth to Bari | 1,086.39 mi (1,748.38 km) |
| Portsmouth to Barletta | 1,055.43 mi (1,698.55 km) |
| Portsmouth to Baronissi | 1,029.03 mi (1,656.06 km) |
| Portsmouth to Barrafranca | 1,194.18 mi (1,921.85 km) |
| Portsmouth to Bassano del Grappa | 683.24 mi (1,099.57 km) |
| Portsmouth to Battipaglia | 1,043.15 mi (1,678.78 km) |
| Portsmouth to Beinasco | 566.06 mi (910.98 km) |
| Portsmouth to Bellinzago Novarese | 574.21 mi (924.10 km) |
| Portsmouth to Belluno | 688.02 mi (1,107.26 km) |
| Portsmouth to Belmonte Mezzagno | 1,130.06 mi (1,818.65 km) |
| Portsmouth to Belpasso | 1,206.47 mi (1,941.63 km) |
