| Caernarfon to Borsbeek | 394.10 mi (634.24 km) |
| Caernarfon to Boussu | 391.90 mi (630.69 km) |
| Caernarfon to Braine-l'Alleud | 405.30 mi (652.26 km) |
| Caernarfon to Braine-le-Chateau | 401.16 mi (645.60 km) |
| Caernarfon to Braine-le-Comte | 398.82 mi (641.83 km) |
| Caernarfon to Brasschaat | 391.84 mi (630.61 km) |
| Caernarfon to Brecht | 396.13 mi (637.50 km) |
| Caernarfon to Bredene | 333.80 mi (537.20 km) |
| Caernarfon to Bree | 439.84 mi (707.85 km) |
| Caernarfon to Bruges | 344.22 mi (553.98 km) |
| Caernarfon to Brussels | 399.27 mi (642.56 km) |
| Caernarfon to Buggenhout | 388.63 mi (625.44 km) |
| Caernarfon to Chapelle-lez-Herlaimont | 409.10 mi (658.39 km) |
| Caernarfon to Charleroi | 417.13 mi (671.30 km) |
| Caernarfon to Chatelet | 420.30 mi (676.41 km) |
