| South Portland to Brighton | 3,203.14 mi (5,154.95 km) |
| South Portland to Brimington | 3,099.64 mi (4,988.39 km) |
| South Portland to Brislington | 3,090.76 mi (4,974.09 km) |
| South Portland to Bristol | 3,088.09 mi (4,969.81 km) |
| South Portland to Brixham | 3,072.75 mi (4,945.11 km) |
| South Portland to Brixton | 3,189.24 mi (5,132.59 km) |
| South Portland to Broadstairs | 3,254.69 mi (5,237.92 km) |
| South Portland to Broadstone | 3,127.96 mi (5,033.96 km) |
| South Portland to Broadwater | 3,193.24 mi (5,139.03 km) |
| South Portland to Brockworth | 3,098.02 mi (4,985.77 km) |
| South Portland to Bromborough | 3,035.20 mi (4,884.68 km) |
| South Portland to Bromley | 3,196.03 mi (5,143.51 km) |
| South Portland to Bromsgrove | 3,091.67 mi (4,975.56 km) |
| South Portland to Broughton Astley | 3,121.05 mi (5,022.85 km) |
| South Portland to Broughty Ferry | 2,986.37 mi (4,806.11 km) |
