| Caerphilly to Borgosatollo | 744.49 mi (1,198.13 km) |
| Caerphilly to Borgosesia | 661.19 mi (1,064.09 km) |
| Caerphilly to Boscoreale | 1,123.95 mi (1,808.82 km) |
| Caerphilly to Boscotrecase | 1,122.52 mi (1,806.51 km) |
| Caerphilly to Botticino Sera | 741.74 mi (1,193.71 km) |
| Caerphilly to Bovalino Marina | 1,319.57 mi (2,123.64 km) |
| Caerphilly to Boves | 704.89 mi (1,134.41 km) |
| Caerphilly to Boville Ernica | 1,043.27 mi (1,678.98 km) |
| Caerphilly to Bovisio Masciago | 697.82 mi (1,123.03 km) |
| Caerphilly to Bovolone | 788.00 mi (1,268.16 km) |
| Caerphilly to Bra | 695.94 mi (1,120.01 km) |
| Caerphilly to Bracciano | 975.54 mi (1,569.98 km) |
| Caerphilly to Brandizzo | 671.82 mi (1,081.19 km) |
| Caerphilly to Breganze | 785.64 mi (1,264.36 km) |
| Caerphilly to Brembate | 713.31 mi (1,147.96 km) |
