| Caernarfon to Bagnolet | 413.95 mi (666.18 km) |
| Caernarfon to Bagnols-sur-Ceze | 739.99 mi (1,190.90 km) |
| Caernarfon to Bailleul | 341.20 mi (549.11 km) |
| Caernarfon to Balma | 709.10 mi (1,141.19 km) |
| Caernarfon to Bar-le-Duc | 509.03 mi (819.21 km) |
| Caernarfon to Barentin | 335.31 mi (539.62 km) |
| Caernarfon to Basse-Goulaine | 427.66 mi (688.26 km) |
| Caernarfon to Bastia | 957.89 mi (1,541.58 km) |
| Caernarfon to Bayeux | 308.14 mi (495.91 km) |
| Caernarfon to Bayonne | 678.82 mi (1,092.46 km) |
| Caernarfon to Beaucaire | 761.93 mi (1,226.21 km) |
| Caernarfon to Beauchamp | 399.59 mi (643.08 km) |
| Caernarfon to Beaumont | 607.32 mi (977.39 km) |
| Caernarfon to Beaumont-sur-Oise | 396.01 mi (637.32 km) |
| Caernarfon to Beaune | 583.62 mi (939.25 km) |
