| South Portland to Bahce | 5,218.73 mi (8,398.74 km) |
| South Portland to Bahcesaray | 5,410.44 mi (8,707.27 km) |
| South Portland to Balikesir | 4,756.72 mi (7,655.19 km) |
| South Portland to Balya | 4,739.29 mi (7,627.16 km) |
| South Portland to Banaz | 4,873.16 mi (7,842.60 km) |
| South Portland to Bandirma | 4,728.47 mi (7,609.74 km) |
| South Portland to Bartin | 4,844.33 mi (7,796.19 km) |
| South Portland to Baskale | 5,458.96 mi (8,785.34 km) |
| South Portland to Baskil | 5,238.90 mi (8,431.20 km) |
| South Portland to Basmakci | 4,921.96 mi (7,921.13 km) |
| South Portland to Batman | 5,360.13 mi (8,626.29 km) |
| South Portland to Battalgazi | 5,228.61 mi (8,414.63 km) |
| South Portland to Bayat | 4,964.42 mi (7,989.47 km) |
| South Portland to Bayburt | 5,208.57 mi (8,382.38 km) |
| South Portland to Bayindir | 4,809.78 mi (7,740.59 km) |
