| Kastamonu to Boppard | 1,391.96 mi (2,240.15 km) |
| Kastamonu to Borgentreich | 1,353.27 mi (2,177.88 km) |
| Kastamonu to Borgholzhausen | 1,404.58 mi (2,260.45 km) |
| Kastamonu to Borken | 1,455.35 mi (2,342.16 km) |
| Kastamonu to Borna | 1,212.26 mi (1,950.95 km) |
| Kastamonu to Bornheim | 1,426.90 mi (2,296.38 km) |
| Kastamonu to Bosel | 1,442.03 mi (2,320.72 km) |
| Kastamonu to Bottrop | 1,446.21 mi (2,327.46 km) |
| Kastamonu to Bovenden | 1,327.15 mi (2,135.84 km) |
| Kastamonu to Brackenheim | 1,307.31 mi (2,103.92 km) |
| Kastamonu to Brake | 1,431.33 mi (2,303.50 km) |
| Kastamonu to Brakel | 1,359.78 mi (2,188.35 km) |
| Kastamonu to Bramsche | 1,424.73 mi (2,292.88 km) |
| Kastamonu to Brand | 1,461.99 mi (2,352.85 km) |
| Kastamonu to Brand-Erbisdorf | 1,172.63 mi (1,887.17 km) |
