| Conwy to Bougival | 399.99 mi (643.72 km) |
| Conwy to Bouguenais | 432.74 mi (696.43 km) |
| Conwy to Boulogne-Billancourt | 404.46 mi (650.92 km) |
| Conwy to Boulogne-sur-Mer | 291.01 mi (468.33 km) |
| Conwy to Bourg-de-Peage | 695.50 mi (1,119.30 km) |
| Conwy to Bourg-en-Bresse | 633.44 mi (1,019.42 km) |
| Conwy to Bourg-la-Reine | 409.57 mi (659.14 km) |
| Conwy to Bourg-les-Valence | 696.87 mi (1,121.50 km) |
| Conwy to Bourges | 508.62 mi (818.55 km) |
| Conwy to Bourgoin-Jallieu | 669.66 mi (1,077.71 km) |
| Conwy to Bressuire | 468.86 mi (754.56 km) |
| Conwy to Brest | 339.09 mi (545.71 km) |
| Conwy to Bretigny-sur-Orge | 418.50 mi (673.50 km) |
| Conwy to Breuillet | 417.31 mi (671.60 km) |
| Conwy to Briancon | 746.63 mi (1,201.58 km) |
