| Portchester to Bispham | 223.20 mi (359.20 km) |
| Portchester to Blackburn | 208.86 mi (336.13 km) |
| Portchester to Blackpool | 220.92 mi (355.54 km) |
| Portchester to Blairgowrie | 407.45 mi (655.72 km) |
| Portchester to Blandford Forum | 45.60 mi (73.38 km) |
| Portchester to Blaydon | 285.82 mi (459.99 km) |
| Portchester to Bletchley | 81.33 mi (130.89 km) |
| Portchester to Bloxwich | 128.14 mi (206.23 km) |
| Portchester to Blunsdon Saint Andrew | 60.47 mi (97.31 km) |
| Portchester to Blyth | 296.45 mi (477.09 km) |
| Portchester to Bo'ness | 371.87 mi (598.47 km) |
| Portchester to Bodmin | 159.72 mi (257.05 km) |
| Portchester to Bognor Regis | 19.80 mi (31.86 km) |
| Portchester to Bolsover | 165.18 mi (265.82 km) |
| Portchester to Bolton | 196.99 mi (317.02 km) |
