| Boulogne-sur-Mer to Brignais | 377.76 mi (607.95 km) |
| Boulogne-sur-Mer to Brignoles | 547.14 mi (880.54 km) |
| Boulogne-sur-Mer to Brive-la-Gaillarde | 384.74 mi (619.17 km) |
| Boulogne-sur-Mer to Bron | 376.44 mi (605.83 km) |
| Boulogne-sur-Mer to Bruay-sur-l'Escaut | 87.46 mi (140.76 km) |
| Boulogne-sur-Mer to Bruges | 416.72 mi (670.65 km) |
| Boulogne-sur-Mer to Brumath | 304.92 mi (490.73 km) |
| Boulogne-sur-Mer to Brunoy | 145.68 mi (234.45 km) |
| Boulogne-sur-Mer to Bruz | 240.16 mi (386.49 km) |
| Boulogne-sur-Mer to Bry-sur-Marne | 136.41 mi (219.52 km) |
| Boulogne-sur-Mer to Bully-les-Mines | 52.50 mi (84.49 km) |
| Boulogne-sur-Mer to Bures-sur-Yvette | 142.35 mi (229.09 km) |
| Boulogne-sur-Mer to Bussy-Saint-Georges | 138.87 mi (223.48 km) |
| Boulogne-sur-Mer to Buxerolles | 291.05 mi (468.41 km) |
| Boulogne-sur-Mer to Cabestany | 559.44 mi (900.32 km) |
