| Kastamonu to Beyne-Heusay | 1,481.39 mi (2,384.07 km) |
| Kastamonu to Bierbeek | 1,522.53 mi (2,450.27 km) |
| Kastamonu to Bilzen | 1,491.44 mi (2,400.24 km) |
| Kastamonu to Binche | 1,541.28 mi (2,480.45 km) |
| Kastamonu to Bissegem | 1,588.13 mi (2,555.85 km) |
| Kastamonu to Blankenberge | 1,599.76 mi (2,574.57 km) |
| Kastamonu to Blegny | 1,478.74 mi (2,379.80 km) |
| Kastamonu to Bocholt | 1,494.44 mi (2,405.07 km) |
| Kastamonu to Boechout | 1,539.87 mi (2,478.19 km) |
| Kastamonu to Bonheiden | 1,535.77 mi (2,471.58 km) |
| Kastamonu to Boom | 1,543.63 mi (2,484.23 km) |
| Kastamonu to Boortmeerbeek | 1,533.51 mi (2,467.95 km) |
| Kastamonu to Borgerhout | 1,542.73 mi (2,482.79 km) |
| Kastamonu to Borgloon | 1,497.61 mi (2,410.17 km) |
| Kastamonu to Bornem | 1,549.53 mi (2,493.72 km) |
