| Castellabate to Bougival | 863.69 mi (1,389.97 km) |
| Castellabate to Bouguenais | 952.16 mi (1,532.35 km) |
| Castellabate to Boulogne-Billancourt | 858.80 mi (1,382.10 km) |
| Castellabate to Boulogne-sur-Mer | 965.69 mi (1,554.12 km) |
| Castellabate to Bourg-de-Peage | 600.41 mi (966.27 km) |
| Castellabate to Bourg-en-Bresse | 637.31 mi (1,025.66 km) |
| Castellabate to Bourg-la-Reine | 853.76 mi (1,373.99 km) |
| Castellabate to Bourg-les-Valence | 603.96 mi (971.98 km) |
| Castellabate to Bourges | 782.47 mi (1,259.27 km) |
| Castellabate to Bourgoin-Jallieu | 611.01 mi (983.32 km) |
| Castellabate to Bressuire | 893.92 mi (1,438.63 km) |
| Castellabate to Brest | 1,107.72 mi (1,782.71 km) |
| Castellabate to Bretigny-sur-Orge | 846.86 mi (1,362.90 km) |
| Castellabate to Breuillet | 849.80 mi (1,367.62 km) |
| Castellabate to Briancon | 529.44 mi (852.05 km) |
