| Kastamonu to Benisa | 1,781.91 mi (2,867.71 km) |
| Kastamonu to Berga | 1,637.39 mi (2,635.13 km) |
| Kastamonu to Berja | 1,978.45 mi (3,184.01 km) |
| Kastamonu to Bermeo | 1,852.94 mi (2,982.02 km) |
| Kastamonu to Berriozar | 1,806.44 mi (2,907.19 km) |
| Kastamonu to Betanzos | 2,126.12 mi (3,421.66 km) |
| Kastamonu to Betera | 1,791.81 mi (2,883.64 km) |
| Kastamonu to Bilbao | 1,864.42 mi (3,000.49 km) |
| Kastamonu to Binefar | 1,718.56 mi (2,765.75 km) |
| Kastamonu to Binisalem | 1,620.57 mi (2,608.05 km) |
| Kastamonu to Blanes | 1,594.16 mi (2,565.55 km) |
| Kastamonu to Boadilla del Monte | 1,952.14 mi (3,141.66 km) |
| Kastamonu to Boiro | 2,169.13 mi (3,490.88 km) |
| Kastamonu to Bolanos de Calatrava | 1,972.70 mi (3,174.76 km) |
| Kastamonu to Bollullos de la Mitacion | 2,131.42 mi (3,430.19 km) |
