| South Portland to Boekel | 3,418.00 mi (5,500.73 km) |
| South Portland to Bolsward | 3,375.00 mi (5,431.54 km) |
| South Portland to Borger | 3,427.30 mi (5,515.71 km) |
| South Portland to Borne | 3,442.06 mi (5,539.45 km) |
| South Portland to Boskoop | 3,365.66 mi (5,416.51 km) |
| South Portland to Boxmeer | 3,427.89 mi (5,516.66 km) |
| South Portland to Boxtel | 3,405.21 mi (5,480.15 km) |
| South Portland to Breda | 3,382.90 mi (5,444.25 km) |
| South Portland to Breukelen | 3,376.87 mi (5,434.54 km) |
| South Portland to Brielle | 3,350.74 mi (5,392.49 km) |
| South Portland to Bronkhorst | 3,425.61 mi (5,512.99 km) |
| South Portland to Brummen | 3,424.31 mi (5,510.89 km) |
| South Portland to Brunssum | 3,447.39 mi (5,548.03 km) |
| South Portland to Bunnik | 3,389.11 mi (5,454.25 km) |
| South Portland to Burgum | 3,389.67 mi (5,455.15 km) |
