| Carcassonne to Bougival | 390.85 mi (629.02 km) |
| Carcassonne to Bouguenais | 335.37 mi (539.72 km) |
| Carcassonne to Boulogne-Billancourt | 388.70 mi (625.55 km) |
| Carcassonne to Boulogne-sur-Mer | 520.48 mi (837.63 km) |
| Carcassonne to Bourg-de-Peage | 184.05 mi (296.20 km) |
| Carcassonne to Bourg-en-Bresse | 250.61 mi (403.31 km) |
| Carcassonne to Bourg-la-Reine | 384.83 mi (619.32 km) |
| Carcassonne to Bourg-les-Valence | 174.26 mi (280.45 km) |
| Carcassonne to Bourges | 267.70 mi (430.83 km) |
| Carcassonne to Bourgoin-Jallieu | 218.56 mi (351.74 km) |
| Carcassonne to Bressuire | 286.52 mi (461.11 km) |
| Carcassonne to Brest | 486.08 mi (782.27 km) |
| Carcassonne to Bretigny-sur-Orge | 373.21 mi (600.62 km) |
| Carcassonne to Breuillet | 370.17 mi (595.73 km) |
| Carcassonne to Briancon | 242.53 mi (390.31 km) |
