| Castanet-Tolosan to Bois-Colombes | 375.04 mi (603.57 km) |
| Castanet-Tolosan to Bois-d'Arcy | 366.10 mi (589.18 km) |
| Castanet-Tolosan to Bois-Guillaume | 411.80 mi (662.73 km) |
| Castanet-Tolosan to Boissy-Saint-Leger | 364.90 mi (587.25 km) |
| Castanet-Tolosan to Bolbec | 421.29 mi (678.00 km) |
| Castanet-Tolosan to Bollene | 170.24 mi (273.97 km) |
| Castanet-Tolosan to Bondoufle | 354.74 mi (570.90 km) |
| Castanet-Tolosan to Bondues | 502.11 mi (808.07 km) |
| Castanet-Tolosan to Bondy | 375.14 mi (603.72 km) |
| Castanet-Tolosan to Bonneuil-sur-Marne | 366.40 mi (589.66 km) |
| Castanet-Tolosan to Bonneville | 298.48 mi (480.36 km) |
| Castanet-Tolosan to Bordeaux | 137.75 mi (221.69 km) |
| Castanet-Tolosan to Borgo | 405.77 mi (653.02 km) |
| Castanet-Tolosan to Bouc-Bel-Air | 196.36 mi (316.00 km) |
| Castanet-Tolosan to Boucau | 149.54 mi (240.66 km) |
