| Castel Gandolfo to Beyne-Heusay | 697.67 mi (1,122.80 km) |
| Castel Gandolfo to Bierbeek | 731.08 mi (1,176.57 km) |
| Castel Gandolfo to Bilzen | 715.47 mi (1,151.44 km) |
| Castel Gandolfo to Binche | 722.07 mi (1,162.05 km) |
| Castel Gandolfo to Bissegem | 770.48 mi (1,239.97 km) |
| Castel Gandolfo to Blankenberge | 799.28 mi (1,286.31 km) |
| Castel Gandolfo to Blegny | 698.75 mi (1,124.53 km) |
| Castel Gandolfo to Bocholt | 732.28 mi (1,178.48 km) |
| Castel Gandolfo to Boechout | 756.12 mi (1,216.86 km) |
| Castel Gandolfo to Bonheiden | 748.22 mi (1,204.15 km) |
| Castel Gandolfo to Boom | 755.16 mi (1,215.31 km) |
| Castel Gandolfo to Boortmeerbeek | 744.55 mi (1,198.24 km) |
| Castel Gandolfo to Borgerhout | 760.69 mi (1,224.21 km) |
| Castel Gandolfo to Borgloon | 715.62 mi (1,151.67 km) |
| Castel Gandolfo to Bornem | 759.40 mi (1,222.14 km) |
