| Castle Rock to Barberino di Mugello | 5,436.81 mi (8,749.70 km) |
| Castle Rock to Barcellona-Pozzo di Gotto | 5,872.34 mi (9,450.62 km) |
| Castle Rock to Bareggio | 5,286.85 mi (8,508.37 km) |
| Castle Rock to Barga | 5,406.49 mi (8,700.90 km) |
| Castle Rock to Bari | 5,777.62 mi (9,298.18 km) |
| Castle Rock to Barletta | 5,747.60 mi (9,249.87 km) |
| Castle Rock to Baronissi | 5,723.83 mi (9,211.61 km) |
| Castle Rock to Barrafranca | 5,874.79 mi (9,454.56 km) |
| Castle Rock to Bassano del Grappa | 5,367.79 mi (8,638.62 km) |
| Castle Rock to Battipaglia | 5,737.96 mi (9,234.35 km) |
| Castle Rock to Beinasco | 5,258.22 mi (8,462.29 km) |
| Castle Rock to Bellinzago Novarese | 5,268.99 mi (8,479.62 km) |
| Castle Rock to Belluno | 5,365.87 mi (8,635.54 km) |
| Castle Rock to Belmonte Mezzagno | 5,809.82 mi (9,350.00 km) |
| Castle Rock to Belpasso | 5,892.77 mi (9,483.50 km) |
