| Castel Bolognese to Bitonto | 332.06 mi (534.40 km) |
| Castel Bolognese to Bitritto | 340.91 mi (548.64 km) |
| Castel Bolognese to Bollate | 156.47 mi (251.82 km) |
| Castel Bolognese to Bologna | 25.67 mi (41.32 km) |
| Castel Bolognese to Bolzano | 152.26 mi (245.04 km) |
| Castel Bolognese to Bomporto | 47.49 mi (76.42 km) |
| Castel Bolognese to Bonate di Sopra | 144.28 mi (232.20 km) |
| Castel Bolognese to Bondeno | 43.45 mi (69.93 km) |
| Castel Bolognese to Bordighera | 208.52 mi (335.58 km) |
| Castel Bolognese to Borgaro Torinese | 211.65 mi (340.61 km) |
| Castel Bolognese to Borgo a Buggiano | 60.81 mi (97.86 km) |
| Castel Bolognese to Borgo San Dalmazzo | 213.35 mi (343.35 km) |
| Castel Bolognese to Borgo San Lorenzo | 32.69 mi (52.62 km) |
| Castel Bolognese to Borgomanero | 188.78 mi (303.82 km) |
| Castel Bolognese to Borgoricco | 83.31 mi (134.08 km) |
