| Holyhead to Bougival | 424.70 mi (683.48 km) |
| Holyhead to Bouguenais | 443.95 mi (714.47 km) |
| Holyhead to Boulogne-Billancourt | 429.29 mi (690.87 km) |
| Holyhead to Boulogne-sur-Mer | 319.85 mi (514.74 km) |
| Holyhead to Bourg-de-Peage | 718.32 mi (1,156.02 km) |
| Holyhead to Bourg-en-Bresse | 658.09 mi (1,059.10 km) |
| Holyhead to Bourg-la-Reine | 434.40 mi (699.10 km) |
| Holyhead to Bourg-les-Valence | 719.34 mi (1,157.67 km) |
| Holyhead to Bourges | 530.15 mi (853.19 km) |
| Holyhead to Bourgoin-Jallieu | 693.51 mi (1,116.09 km) |
| Holyhead to Bressuire | 483.07 mi (777.42 km) |
| Holyhead to Brest | 339.93 mi (547.06 km) |
| Holyhead to Bretigny-sur-Orge | 442.93 mi (712.82 km) |
| Holyhead to Breuillet | 441.39 mi (710.34 km) |
| Holyhead to Briancon | 771.30 mi (1,241.29 km) |
