| Portsmouth to Belvedere Marittimo | 1,125.80 mi (1,811.80 km) |
| Portsmouth to Benevento | 1,009.83 mi (1,625.16 km) |
| Portsmouth to Bergamo | 607.01 mi (976.89 km) |
| Portsmouth to Bernalda | 1,114.26 mi (1,793.22 km) |
| Portsmouth to Bertinoro | 767.96 mi (1,235.91 km) |
| Portsmouth to Besana in Brianza | 592.46 mi (953.47 km) |
| Portsmouth to Besozzo | 563.16 mi (906.31 km) |
| Portsmouth to Biancavilla | 1,199.01 mi (1,929.62 km) |
| Portsmouth to Biassono | 594.84 mi (957.31 km) |
| Portsmouth to Bibbiano | 682.90 mi (1,099.03 km) |
| Portsmouth to Bibbiena | 777.38 mi (1,251.07 km) |
| Portsmouth to Biella | 555.02 mi (893.22 km) |
| Portsmouth to Bisceglie | 1,067.24 mi (1,717.55 km) |
| Portsmouth to Bisignano | 1,145.62 mi (1,843.69 km) |
| Portsmouth to Bitetto | 1,086.47 mi (1,748.51 km) |
