| South Portland to Bispham | 3,023.21 mi (4,865.39 km) |
| South Portland to Blackburn | 3,047.11 mi (4,903.85 km) |
| South Portland to Blackpool | 3,023.53 mi (4,865.90 km) |
| South Portland to Blairgowrie | 2,967.02 mi (4,774.95 km) |
| South Portland to Blandford Forum | 3,118.81 mi (5,019.24 km) |
| South Portland to Blaydon | 3,054.62 mi (4,915.94 km) |
| South Portland to Bletchley | 3,152.38 mi (5,073.27 km) |
| South Portland to Bloxwich | 3,088.15 mi (4,969.90 km) |
| South Portland to Blunsdon Saint Andrew | 3,117.77 mi (5,017.57 km) |
| South Portland to Blyth | 3,059.57 mi (4,923.90 km) |
| South Portland to Bo'ness | 2,965.46 mi (4,772.45 km) |
| South Portland to Bodmin | 3,020.88 mi (4,861.64 km) |
| South Portland to Bognor Regis | 3,181.88 mi (5,120.73 km) |
| South Portland to Bolsover | 3,104.27 mi (4,995.84 km) |
| South Portland to Bolton | 3,052.39 mi (4,912.34 km) |
