| South Portland to Brownhills | 3,090.33 mi (4,973.41 km) |
| South Portland to Broxbourne | 3,186.51 mi (5,128.19 km) |
| South Portland to Broxburn | 2,971.92 mi (4,782.84 km) |
| South Portland to Bryn | 3,044.86 mi (4,900.24 km) |
| South Portland to Buckhurst Hill | 3,191.50 mi (5,136.22 km) |
| South Portland to Buckie | 2,965.59 mi (4,772.66 km) |
| South Portland to Buckingham | 3,142.10 mi (5,056.73 km) |
| South Portland to Buckley | 3,033.98 mi (4,882.73 km) |
| South Portland to Bucksburn | 3,001.42 mi (4,830.32 km) |
| South Portland to Bude | 3,020.83 mi (4,861.56 km) |
| South Portland to Bulwell | 3,112.50 mi (5,009.08 km) |
| South Portland to Burbage | 3,116.22 mi (5,015.06 km) |
| South Portland to Burgess Hill | 3,200.50 mi (5,150.71 km) |
| South Portland to Burnham | 3,165.32 mi (5,094.10 km) |
| South Portland to Burnham-on-Sea | 3,076.38 mi (4,950.96 km) |
