| Boulder to Barberino di Mugello | 5,417.02 mi (8,717.86 km) |
| Boulder to Barcellona-Pozzo di Gotto | 5,854.03 mi (9,421.15 km) |
| Boulder to Bareggio | 5,267.13 mi (8,476.63 km) |
| Boulder to Barga | 5,386.97 mi (8,669.50 km) |
| Boulder to Bari | 5,756.97 mi (9,264.95 km) |
| Boulder to Barletta | 5,727.11 mi (9,216.90 km) |
| Boulder to Baronissi | 5,704.32 mi (9,180.22 km) |
| Boulder to Barrafranca | 5,857.39 mi (9,426.56 km) |
| Boulder to Bassano del Grappa | 5,346.80 mi (8,604.84 km) |
| Boulder to Battipaglia | 5,718.43 mi (9,202.92 km) |
| Boulder to Beinasco | 5,239.32 mi (8,431.87 km) |
| Boulder to Bellinzago Novarese | 5,249.34 mi (8,447.99 km) |
| Boulder to Belluno | 5,344.48 mi (8,601.12 km) |
| Boulder to Belmonte Mezzagno | 5,792.43 mi (9,322.01 km) |
| Boulder to Belpasso | 5,874.88 mi (9,454.70 km) |
