| Caernarfon to Beyne-Heusay | 457.15 mi (735.71 km) |
| Caernarfon to Bierbeek | 415.87 mi (669.28 km) |
| Caernarfon to Bilzen | 444.48 mi (715.32 km) |
| Caernarfon to Binche | 407.03 mi (655.05 km) |
| Caernarfon to Bissegem | 356.54 mi (573.79 km) |
| Caernarfon to Blankenberge | 337.33 mi (542.88 km) |
| Caernarfon to Blegny | 458.91 mi (738.55 km) |
| Caernarfon to Bocholt | 438.67 mi (705.97 km) |
| Caernarfon to Boechout | 395.48 mi (636.46 km) |
| Caernarfon to Bonheiden | 400.76 mi (644.97 km) |
| Caernarfon to Boom | 392.75 mi (632.07 km) |
| Caernarfon to Boortmeerbeek | 403.54 mi (649.43 km) |
| Caernarfon to Borgerhout | 392.08 mi (631.00 km) |
| Caernarfon to Borgloon | 439.49 mi (707.29 km) |
| Caernarfon to Bornem | 387.00 mi (622.82 km) |
