| Castelldefels to Belvedere Park (Georgia) | 4,556.70 mi (7,333.30 km) |
| Castelldefels to Belvidere (Illinois) | 4,434.81 mi (7,137.14 km) |
| Castelldefels to Bemidji (Minnesota) | 4,477.82 mi (7,206.36 km) |
| Castelldefels to Benbrook (Texas) | 5,208.03 mi (8,381.51 km) |
| Castelldefels to Bend (Oregon) | 5,572.80 mi (8,968.55 km) |
| Castelldefels to Benicia (California) | 5,921.57 mi (9,529.85 km) |
| Castelldefels to Bensenville (Illinois) | 4,406.58 mi (7,091.70 km) |
| Castelldefels to Bensville (Maryland) | 4,035.22 mi (6,494.06 km) |
| Castelldefels to Benton (Arkansas) | 4,906.52 mi (7,896.29 km) |
| Castelldefels to Bentonville (Arkansas) | 4,905.31 mi (7,894.34 km) |
| Castelldefels to Berea (Kentucky) | 4,409.40 mi (7,096.24 km) |
| Castelldefels to Berea (Ohio) | 4,161.40 mi (6,697.12 km) |
| Castelldefels to Berea (South Carolina) | 4,428.04 mi (7,126.25 km) |
| Castelldefels to Bergenfield (New Jersey) | 3,818.49 mi (6,145.26 km) |
| Castelldefels to Berkeley (California) | 5,936.58 mi (9,554.01 km) |
