| Boulder to Brescia | 5,306.44 mi (8,539.89 km) |
| Boulder to Bressanone | 5,297.41 mi (8,525.36 km) |
| Boulder to Bresso | 5,270.89 mi (8,482.67 km) |
| Boulder to Brindisi | 5,818.98 mi (9,364.75 km) |
| Boulder to Broni | 5,296.31 mi (8,523.58 km) |
| Boulder to Bronte | 5,859.10 mi (9,429.31 km) |
| Boulder to Brugherio | 5,274.13 mi (8,487.90 km) |
| Boulder to Brugnera | 5,366.98 mi (8,637.32 km) |
| Boulder to Bruino | 5,235.17 mi (8,425.20 km) |
| Boulder to Brunico | 5,302.69 mi (8,533.85 km) |
| Boulder to Brusciano | 5,683.18 mi (9,146.20 km) |
| Boulder to Bucine | 5,455.81 mi (8,780.28 km) |
| Boulder to Budrio | 5,400.09 mi (8,690.60 km) |
| Boulder to Busca | 5,258.85 mi (8,463.31 km) |
| Boulder to Bussolengo | 5,331.55 mi (8,580.30 km) |
