| Caerphilly to Borsbeek | 332.92 mi (535.78 km) |
| Caerphilly to Boussu | 314.90 mi (506.79 km) |
| Caerphilly to Braine-l'Alleud | 334.72 mi (538.68 km) |
| Caerphilly to Braine-le-Chateau | 330.21 mi (531.42 km) |
| Caerphilly to Braine-le-Comte | 325.96 mi (524.58 km) |
| Caerphilly to Brasschaat | 332.40 mi (534.95 km) |
| Caerphilly to Brecht | 338.17 mi (544.23 km) |
| Caerphilly to Bredene | 267.92 mi (431.18 km) |
| Caerphilly to Bree | 380.76 mi (612.78 km) |
| Caerphilly to Bruges | 278.81 mi (448.71 km) |
| Caerphilly to Brussels | 331.39 mi (533.32 km) |
| Caerphilly to Buggenhout | 322.87 mi (519.61 km) |
| Caerphilly to Chapelle-lez-Herlaimont | 334.77 mi (538.76 km) |
| Caerphilly to Charleroi | 342.40 mi (551.05 km) |
| Caerphilly to Chatelet | 345.92 mi (556.71 km) |
