| Castle Rock to Ayr | 4,393.73 mi (7,071.03 km) |
| Castle Rock to Bacup | 4,541.35 mi (7,308.59 km) |
| Castle Rock to Baguley | 4,550.58 mi (7,323.45 km) |
| Castle Rock to Baildon | 4,550.33 mi (7,323.05 km) |
| Castle Rock to Bailleston | 4,396.51 mi (7,075.50 km) |
| Castle Rock to Balderton | 4,615.21 mi (7,427.46 km) |
| Castle Rock to Baldock | 4,678.04 mi (7,528.58 km) |
| Castle Rock to Balham | 4,701.63 mi (7,566.55 km) |
| Castle Rock to Bamber Bridge | 4,524.77 mi (7,281.91 km) |
| Castle Rock to Banbridge | 4,378.82 mi (7,047.03 km) |
| Castle Rock to Banbury | 4,635.62 mi (7,460.30 km) |
| Castle Rock to Bangor | 4,387.63 mi (7,061.21 km) |
| Castle Rock to Bangor | 4,493.50 mi (7,231.59 km) |
| Castle Rock to Banstead | 4,704.81 mi (7,571.65 km) |
| Castle Rock to Bargoed | 4,583.53 mi (7,376.48 km) |
