| Siena to Bagnolet | 573.32 mi (922.67 km) |
| Siena to Bagnols-sur-Ceze | 339.96 mi (547.11 km) |
| Siena to Bailleul | 652.34 mi (1,049.84 km) |
| Siena to Balma | 493.22 mi (793.76 km) |
| Siena to Bar-le-Duc | 478.58 mi (770.20 km) |
| Siena to Barentin | 654.14 mi (1,052.74 km) |
| Siena to Basse-Goulaine | 677.00 mi (1,089.53 km) |
| Siena to Bastia | 104.17 mi (167.65 km) |
| Siena to Bayeux | 705.52 mi (1,135.43 km) |
| Siena to Bayonne | 642.58 mi (1,034.13 km) |
| Siena to Beaucaire | 336.45 mi (541.47 km) |
| Siena to Beauchamp | 587.65 mi (945.73 km) |
| Siena to Beaumont | 439.39 mi (707.13 km) |
| Siena to Beaumont-sur-Oise | 589.87 mi (949.30 km) |
| Siena to Beaune | 406.68 mi (654.48 km) |
