| Siena to Bois-Colombes | 580.72 mi (934.58 km) |
| Siena to Bois-d'Arcy | 584.34 mi (940.40 km) |
| Siena to Bois-Guillaume | 645.11 mi (1,038.20 km) |
| Siena to Boissy-Saint-Leger | 564.95 mi (909.19 km) |
| Siena to Bolbec | 672.61 mi (1,082.47 km) |
| Siena to Bollene | 334.83 mi (538.85 km) |
| Siena to Bondoufle | 563.81 mi (907.37 km) |
| Siena to Bondues | 640.17 mi (1,030.25 km) |
| Siena to Bondy | 572.46 mi (921.29 km) |
| Siena to Bonneuil-sur-Marne | 566.76 mi (912.12 km) |
| Siena to Bonneville | 308.15 mi (495.92 km) |
| Siena to Bordeaux | 599.93 mi (965.49 km) |
| Siena to Borgo | 109.83 mi (176.76 km) |
| Siena to Bouc-Bel-Air | 297.20 mi (478.29 km) |
| Siena to Boucau | 642.78 mi (1,034.46 km) |
