| Castelldefels to Bingol | 2,026.59 mi (3,261.48 km) |
| Castelldefels to Birecik | 1,937.05 mi (3,117.39 km) |
| Castelldefels to Bitlis | 2,119.40 mi (3,410.84 km) |
| Castelldefels to Bodrum | 1,389.17 mi (2,235.65 km) |
| Castelldefels to Bogazliyan | 1,749.99 mi (2,816.34 km) |
| Castelldefels to Bolu | 1,537.86 mi (2,474.95 km) |
| Castelldefels to Bolvadin | 1,541.73 mi (2,481.18 km) |
| Castelldefels to Bor | 1,740.91 mi (2,801.72 km) |
| Castelldefels to Borcka | 2,041.75 mi (3,285.88 km) |
| Castelldefels to Boyabat | 1,690.09 mi (2,719.94 km) |
| Castelldefels to Bozdogan | 1,420.70 mi (2,286.39 km) |
| Castelldefels to Bozkir | 1,635.83 mi (2,632.61 km) |
| Castelldefels to Bozkurt | 1,485.43 mi (2,390.56 km) |
| Castelldefels to Bozuyuk | 1,468.82 mi (2,363.84 km) |
| Castelldefels to Bucak | 1,544.03 mi (2,484.87 km) |
