| Castel Bolognese to Belvedere Marittimo | 386.02 mi (621.24 km) |
| Castel Bolognese to Benevento | 266.99 mi (429.68 km) |
| Castel Bolognese to Bergamo | 141.04 mi (226.99 km) |
| Castel Bolognese to Bernalda | 366.95 mi (590.55 km) |
| Castel Bolognese to Bertinoro | 20.12 mi (32.38 km) |
| Castel Bolognese to Besana in Brianza | 155.71 mi (250.59 km) |
| Castel Bolognese to Besozzo | 185.96 mi (299.27 km) |
| Castel Bolognese to Biancavilla | 487.51 mi (784.57 km) |
| Castel Bolognese to Biassono | 153.63 mi (247.25 km) |
| Castel Bolognese to Bibbiano | 70.02 mi (112.69 km) |
| Castel Bolognese to Bibbiena | 42.62 mi (68.59 km) |
| Castel Bolognese to Biella | 201.95 mi (325.01 km) |
| Castel Bolognese to Bisceglie | 319.33 mi (513.92 km) |
| Castel Bolognese to Bisignano | 403.74 mi (649.75 km) |
| Castel Bolognese to Bitetto | 338.55 mi (544.84 km) |
