| Siena to Brandenburg | 631.08 mi (1,015.62 km) |
| Siena to Brandis | 557.08 mi (896.53 km) |
| Siena to Braunfels | 516.34 mi (830.98 km) |
| Siena to Braunsbedra | 550.97 mi (886.70 km) |
| Siena to Braunschweig | 619.42 mi (996.86 km) |
| Siena to Breckerfeld | 578.06 mi (930.30 km) |
| Siena to Breisach am Rhein | 372.54 mi (599.55 km) |
| Siena to Bremen | 684.58 mi (1,101.72 km) |
| Siena to Bremerhaven | 717.94 mi (1,155.41 km) |
| Siena to Bremervorde | 709.44 mi (1,141.74 km) |
| Siena to Bretten | 414.50 mi (667.07 km) |
| Siena to Bretzfeld | 415.22 mi (668.23 km) |
| Siena to Brieselang | 644.74 mi (1,037.61 km) |
| Siena to Brilon | 572.77 mi (921.78 km) |
| Siena to Bruchhausen-Vilsen | 666.08 mi (1,071.95 km) |
