| South Portland to Brescia | 3,788.08 mi (6,096.33 km) |
| South Portland to Bressanone | 3,808.60 mi (6,129.35 km) |
| South Portland to Bresso | 3,744.33 mi (6,025.92 km) |
| South Portland to Brindisi | 4,297.63 mi (6,916.37 km) |
| South Portland to Broni | 3,763.35 mi (6,056.53 km) |
| South Portland to Bronte | 4,275.18 mi (6,880.24 km) |
| South Portland to Brugherio | 3,748.75 mi (6,033.04 km) |
| South Portland to Brugnera | 3,872.79 mi (6,232.65 km) |
| South Portland to Bruino | 3,687.92 mi (5,935.14 km) |
| South Portland to Brunico | 3,817.39 mi (6,143.49 km) |
| South Portland to Brusciano | 4,134.65 mi (6,654.07 km) |
| South Portland to Bucine | 3,918.80 mi (6,306.70 km) |
| South Portland to Budrio | 3,877.64 mi (6,240.45 km) |
| South Portland to Busca | 3,704.33 mi (5,961.55 km) |
| South Portland to Bussolengo | 3,817.11 mi (6,143.05 km) |
