| Siena to Brie-Comte-Robert | 558.84 mi (899.37 km) |
| Siena to Brignais | 362.56 mi (583.48 km) |
| Siena to Brignoles | 264.74 mi (426.05 km) |
| Siena to Brive-la-Gaillarde | 501.11 mi (806.45 km) |
| Siena to Bron | 357.48 mi (575.32 km) |
| Siena to Bruay-sur-l'Escaut | 611.52 mi (984.14 km) |
| Siena to Bruges | 601.82 mi (968.54 km) |
| Siena to Brumath | 412.34 mi (663.59 km) |
| Siena to Brunoy | 562.90 mi (905.90 km) |
| Siena to Bruz | 708.91 mi (1,140.89 km) |
| Siena to Bry-sur-Marne | 568.41 mi (914.77 km) |
| Siena to Bully-les-Mines | 637.48 mi (1,025.92 km) |
| Siena to Bures-sur-Yvette | 575.27 mi (925.81 km) |
| Siena to Bussy-Saint-Georges | 562.26 mi (904.86 km) |
| Siena to Buxerolles | 582.14 mi (936.87 km) |
