| South Portland to Bollullos par del Condado | 3,295.89 mi (5,304.23 km) |
| South Portland to Bormujos | 3,317.50 mi (5,339.00 km) |
| South Portland to Brenes | 3,321.04 mi (5,344.70 km) |
| South Portland to Brunete | 3,318.24 mi (5,340.19 km) |
| South Portland to Bueu | 3,037.14 mi (4,887.80 km) |
| South Portland to Bullas | 3,504.57 mi (5,640.06 km) |
| South Portland to Bunol | 3,499.97 mi (5,632.65 km) |
| South Portland to Burela de Cabo | 3,065.07 mi (4,932.76 km) |
| South Portland to Burgos | 3,272.69 mi (5,266.88 km) |
| South Portland to Burjasot | 3,515.02 mi (5,656.88 km) |
| South Portland to Burriana | 3,516.94 mi (5,659.97 km) |
| South Portland to Cabanaquinta | 3,163.90 mi (5,091.80 km) |
| South Portland to Cabanillas del Campo | 3,346.26 mi (5,385.29 km) |
| South Portland to Cabra | 3,392.62 mi (5,459.90 km) |
| South Portland to Caceres | 3,234.84 mi (5,205.98 km) |
