| Idstein to Bougival | 290.45 mi (467.43 km) |
| Idstein to Bouguenais | 497.32 mi (800.36 km) |
| Idstein to Boulogne-Billancourt | 286.91 mi (461.73 km) |
| Idstein to Boulogne-sur-Mer | 294.82 mi (474.46 km) |
| Idstein to Bourg-de-Peage | 388.20 mi (624.75 km) |
| Idstein to Bourg-en-Bresse | 310.76 mi (500.13 km) |
| Idstein to Bourg-la-Reine | 285.23 mi (459.04 km) |
| Idstein to Bourg-les-Valence | 396.80 mi (638.59 km) |
| Idstein to Bourges | 344.69 mi (554.73 km) |
| Idstein to Bourgoin-Jallieu | 349.00 mi (561.66 km) |
| Idstein to Bressuire | 463.59 mi (746.07 km) |
| Idstein to Brest | 587.99 mi (946.28 km) |
| Idstein to Bretigny-sur-Orge | 290.29 mi (467.18 km) |
| Idstein to Breuillet | 297.19 mi (478.28 km) |
| Idstein to Briancon | 375.74 mi (604.69 km) |
