| South Portland to Benisa | 3,563.20 mi (5,734.41 km) |
| South Portland to Berga | 3,533.78 mi (5,687.06 km) |
| South Portland to Berja | 3,485.00 mi (5,608.56 km) |
| South Portland to Bermeo | 3,285.52 mi (5,287.53 km) |
| South Portland to Berriozar | 3,350.88 mi (5,392.72 km) |
| South Portland to Betanzos | 3,037.58 mi (4,888.51 km) |
| South Portland to Betera | 3,509.56 mi (5,648.09 km) |
| South Portland to Bilbao | 3,281.29 mi (5,280.73 km) |
| South Portland to Binefar | 3,471.41 mi (5,586.69 km) |
| South Portland to Binisalem | 3,659.46 mi (5,889.32 km) |
| South Portland to Blanes | 3,590.59 mi (5,778.49 km) |
| South Portland to Boadilla del Monte | 3,323.59 mi (5,348.79 km) |
| South Portland to Boiro | 3,022.53 mi (4,864.30 km) |
| South Portland to Bolanos de Calatrava | 3,379.84 mi (5,439.32 km) |
| South Portland to Bollullos de la Mitacion | 3,315.40 mi (5,335.62 km) |
