| Kastamonu to Bougival | 1,613.22 mi (2,596.22 km) |
| Kastamonu to Bouguenais | 1,780.10 mi (2,864.79 km) |
| Kastamonu to Boulogne-Billancourt | 1,608.39 mi (2,588.46 km) |
| Kastamonu to Boulogne-sur-Mer | 1,655.53 mi (2,664.32 km) |
| Kastamonu to Bourg-de-Peage | 1,460.67 mi (2,350.73 km) |
| Kastamonu to Bourg-en-Bresse | 1,453.92 mi (2,339.86 km) |
| Kastamonu to Bourg-la-Reine | 1,604.59 mi (2,582.34 km) |
| Kastamonu to Bourg-les-Valence | 1,468.28 mi (2,362.97 km) |
| Kastamonu to Bourges | 1,591.16 mi (2,560.72 km) |
| Kastamonu to Bourgoin-Jallieu | 1,450.18 mi (2,333.84 km) |
| Kastamonu to Bressuire | 1,726.74 mi (2,778.91 km) |
| Kastamonu to Brest | 1,913.38 mi (3,079.29 km) |
| Kastamonu to Bretigny-sur-Orge | 1,603.70 mi (2,580.90 km) |
| Kastamonu to Breuillet | 1,609.47 mi (2,590.20 km) |
| Kastamonu to Briancon | 1,383.17 mi (2,226.00 km) |
