| South Portland to Belper | 3,100.89 mi (4,990.39 km) |
| South Portland to Bentley | 3,103.53 mi (4,994.65 km) |
| South Portland to Berkhampstead | 3,164.49 mi (5,092.75 km) |
| South Portland to Berwick-Upon-Tweed | 3,029.96 mi (4,876.25 km) |
| South Portland to Beverley | 3,125.75 mi (5,030.41 km) |
| South Portland to Bewdley | 3,080.48 mi (4,957.55 km) |
| South Portland to Bexleyheath | 3,199.59 mi (5,149.24 km) |
| South Portland to Bicester | 3,137.53 mi (5,049.36 km) |
| South Portland to Bickenhill | 3,102.93 mi (4,993.69 km) |
| South Portland to Bickley | 3,197.22 mi (5,145.43 km) |
| South Portland to Biddulph | 3,071.45 mi (4,943.02 km) |
| South Portland to Bideford | 3,030.74 mi (4,877.50 km) |
| South Portland to Bidston | 3,030.00 mi (4,876.31 km) |
| South Portland to Biggleswade | 3,169.57 mi (5,100.93 km) |
| South Portland to Billericay | 3,207.07 mi (5,161.28 km) |
