| South Portland to Beverly Hills (California) | 2,632.67 mi (4,236.87 km) |
| South Portland to Beverly Hills (Florida) | 1,218.76 mi (1,961.41 km) |
| South Portland to Beverly Hills (Michigan) | 657.50 mi (1,058.15 km) |
| South Portland to Bexley (Ohio) | 697.94 mi (1,123.23 km) |
| South Portland to Biddeford (Maine) | 13.91 mi (22.38 km) |
| South Portland to Big Bear City (California) | 2,546.24 mi (4,097.77 km) |
| South Portland to Big Lake (Minnesota) | 1,157.99 mi (1,863.60 km) |
| South Portland to Big Spring (Texas) | 1,858.55 mi (2,991.05 km) |
| South Portland to Billings (Montana) | 1,866.73 mi (3,004.21 km) |
| South Portland to Biloxi (Mississippi) | 1,368.80 mi (2,202.87 km) |
| South Portland to Binghamton (New York) | 303.51 mi (488.45 km) |
| South Portland to Birmingham (Alabama) | 1,128.78 mi (1,816.59 km) |
| South Portland to Birmingham (Michigan) | 655.92 mi (1,055.60 km) |
| South Portland to Bismarck (North Dakota) | 1,489.96 mi (2,397.87 km) |
| South Portland to Bithlo (Florida) | 1,201.07 mi (1,932.94 km) |
