| Castle Rock to Boekel | 4,891.77 mi (7,872.55 km) |
| Castle Rock to Bolsward | 4,822.70 mi (7,761.38 km) |
| Castle Rock to Borger | 4,869.20 mi (7,836.23 km) |
| Castle Rock to Borne | 4,895.78 mi (7,879.00 km) |
| Castle Rock to Boskoop | 4,837.77 mi (7,785.64 km) |
| Castle Rock to Boxmeer | 4,898.85 mi (7,883.94 km) |
| Castle Rock to Boxtel | 4,881.52 mi (7,856.05 km) |
| Castle Rock to Breda | 4,862.83 mi (7,825.96 km) |
| Castle Rock to Breukelen | 4,844.73 mi (7,796.84 km) |
| Castle Rock to Brielle | 4,829.05 mi (7,771.60 km) |
| Castle Rock to Bronkhorst | 4,887.16 mi (7,865.13 km) |
| Castle Rock to Brummen | 4,886.08 mi (7,863.39 km) |
| Castle Rock to Brunssum | 4,930.63 mi (7,935.09 km) |
| Castle Rock to Bunnik | 4,857.66 mi (7,817.65 km) |
| Castle Rock to Burgum | 4,831.73 mi (7,775.92 km) |
