| Castel San Giovanni to Bougival | 433.03 mi (696.90 km) |
| Castel San Giovanni to Bouguenais | 548.98 mi (883.50 km) |
| Castel San Giovanni to Boulogne-Billancourt | 428.07 mi (688.91 km) |
| Castel San Giovanni to Boulogne-sur-Mer | 533.33 mi (858.31 km) |
| Castel San Giovanni to Bourg-de-Peage | 213.96 mi (344.34 km) |
| Castel San Giovanni to Bourg-en-Bresse | 218.24 mi (351.23 km) |
| Castel San Giovanni to Bourg-la-Reine | 423.10 mi (680.92 km) |
| Castel San Giovanni to Bourg-les-Valence | 221.80 mi (356.95 km) |
| Castel San Giovanni to Bourges | 365.28 mi (587.86 km) |
| Castel San Giovanni to Bourgoin-Jallieu | 205.44 mi (330.62 km) |
| Castel San Giovanni to Bressuire | 492.09 mi (791.95 km) |
| Castel San Giovanni to Brest | 697.53 mi (1,122.56 km) |
| Castel San Giovanni to Bretigny-sur-Orge | 416.92 mi (670.97 km) |
| Castel San Giovanni to Breuillet | 420.37 mi (676.52 km) |
| Castel San Giovanni to Briancon | 137.19 mi (220.78 km) |
