| South Portland to Blumberg | 3,642.92 mi (5,862.71 km) |
| South Portland to Bobenheim-Roxheim | 3,582.64 mi (5,765.71 km) |
| South Portland to Bobingen | 3,723.08 mi (5,991.71 km) |
| South Portland to Boblingen | 3,636.45 mi (5,852.29 km) |
| South Portland to Bocholt | 3,449.30 mi (5,551.11 km) |
| South Portland to Bochum | 3,482.46 mi (5,604.48 km) |
| South Portland to Bockenem | 3,581.32 mi (5,763.58 km) |
| South Portland to Bockhorn | 3,461.73 mi (5,571.12 km) |
| South Portland to Bogen | 3,777.30 mi (6,078.98 km) |
| South Portland to Bohl-Iggelheim | 3,586.86 mi (5,772.49 km) |
| South Portland to Bohmte | 3,501.13 mi (5,634.52 km) |
| South Portland to Boizenburg | 3,564.80 mi (5,737.00 km) |
| South Portland to Bonen | 3,500.63 mi (5,633.72 km) |
| South Portland to Bonn | 3,498.69 mi (5,630.60 km) |
| South Portland to Bopfingen | 3,685.45 mi (5,931.16 km) |
