| Castel Bolognese to Bougival | 555.35 mi (893.75 km) |
| Castel Bolognese to Bouguenais | 675.63 mi (1,087.33 km) |
| Castel Bolognese to Boulogne-Billancourt | 550.33 mi (885.68 km) |
| Castel Bolognese to Boulogne-sur-Mer | 648.52 mi (1,043.70 km) |
| Castel Bolognese to Bourg-de-Peage | 335.25 mi (539.54 km) |
| Castel Bolognese to Bourg-en-Bresse | 345.06 mi (555.32 km) |
| Castel Bolognese to Bourg-la-Reine | 545.46 mi (877.84 km) |
| Castel Bolognese to Bourg-les-Valence | 342.18 mi (550.68 km) |
| Castel Bolognese to Bourges | 492.01 mi (791.82 km) |
| Castel Bolognese to Bourgoin-Jallieu | 330.85 mi (532.45 km) |
| Castel Bolognese to Bressuire | 618.58 mi (995.51 km) |
| Castel Bolognese to Brest | 824.31 mi (1,326.59 km) |
| Castel Bolognese to Bretigny-sur-Orge | 539.96 mi (868.98 km) |
| Castel Bolognese to Breuillet | 543.78 mi (875.12 km) |
| Castel Bolognese to Briancon | 257.16 mi (413.85 km) |
