| Castano Primo to Bougival | 386.07 mi (621.32 km) |
| Castano Primo to Bouguenais | 507.49 mi (816.73 km) |
| Castano Primo to Boulogne-Billancourt | 381.09 mi (613.31 km) |
| Castano Primo to Boulogne-sur-Mer | 486.04 mi (782.21 km) |
| Castano Primo to Bourg-de-Peage | 184.07 mi (296.23 km) |
| Castano Primo to Bourg-en-Bresse | 176.08 mi (283.38 km) |
| Castano Primo to Bourg-la-Reine | 376.14 mi (605.34 km) |
| Castano Primo to Bourg-les-Valence | 192.84 mi (310.35 km) |
| Castano Primo to Bourges | 321.84 mi (517.94 km) |
| Castano Primo to Bourgoin-Jallieu | 168.96 mi (271.92 km) |
| Castano Primo to Bressuire | 451.25 mi (726.22 km) |
| Castano Primo to Brest | 654.12 mi (1,052.71 km) |
| Castano Primo to Bretigny-sur-Orge | 370.13 mi (595.67 km) |
| Castano Primo to Breuillet | 373.69 mi (601.40 km) |
| Castano Primo to Briancon | 113.16 mi (182.11 km) |
