| Castle Rock to Brownhills | 4,591.75 mi (7,389.70 km) |
| Castle Rock to Broxbourne | 4,693.65 mi (7,553.70 km) |
| Castle Rock to Broxburn | 4,414.41 mi (7,104.31 km) |
| Castle Rock to Bryn | 4,533.72 mi (7,296.32 km) |
| Castle Rock to Buckhurst Hill | 4,700.44 mi (7,564.64 km) |
| Castle Rock to Buckie | 4,366.36 mi (7,026.98 km) |
| Castle Rock to Buckingham | 4,650.38 mi (7,484.07 km) |
| Castle Rock to Buckley | 4,531.62 mi (7,292.94 km) |
| Castle Rock to Bucksburn | 4,409.66 mi (7,096.66 km) |
| Castle Rock to Bude | 4,570.30 mi (7,355.19 km) |
| Castle Rock to Bulwell | 4,602.95 mi (7,407.73 km) |
| Castle Rock to Burbage | 4,616.59 mi (7,429.68 km) |
| Castle Rock to Burgess Hill | 4,722.62 mi (7,600.32 km) |
| Castle Rock to Burnham | 4,680.06 mi (7,531.83 km) |
| Castle Rock to Burnham-on-Sea | 4,609.94 mi (7,418.99 km) |
