| Caerphilly to Boppard | 479.58 mi (771.81 km) |
| Caerphilly to Borgentreich | 534.77 mi (860.63 km) |
| Caerphilly to Borgholzhausen | 492.51 mi (792.62 km) |
| Caerphilly to Borken | 431.81 mi (694.94 km) |
| Caerphilly to Borna | 677.76 mi (1,090.75 km) |
| Caerphilly to Bornheim | 446.12 mi (717.96 km) |
| Caerphilly to Bosel | 481.80 mi (775.39 km) |
| Caerphilly to Bottrop | 435.35 mi (700.62 km) |
| Caerphilly to Bovenden | 563.38 mi (906.67 km) |
| Caerphilly to Brackenheim | 567.78 mi (913.76 km) |
| Caerphilly to Brake | 506.74 mi (815.52 km) |
| Caerphilly to Brakel | 531.12 mi (854.75 km) |
| Caerphilly to Bramsche | 479.48 mi (771.65 km) |
| Caerphilly to Brand | 410.27 mi (660.27 km) |
| Caerphilly to Brand-Erbisdorf | 715.85 mi (1,152.06 km) |
