| Duffel to Bouguenais | 387.61 mi (623.80 km) |
| Duffel to Boulogne-Billancourt | 186.30 mi (299.82 km) |
| Duffel to Boulogne-sur-Mer | 129.02 mi (207.64 km) |
| Duffel to Bourg-de-Peage | 419.58 mi (675.24 km) |
| Duffel to Bourg-en-Bresse | 339.72 mi (546.73 km) |
| Duffel to Bourg-la-Reine | 187.83 mi (302.29 km) |
| Duffel to Bourg-les-Valence | 425.45 mi (684.70 km) |
| Duffel to Bourges | 293.54 mi (472.40 km) |
| Duffel to Bourgoin-Jallieu | 382.55 mi (615.66 km) |
| Duffel to Bressuire | 371.53 mi (597.93 km) |
| Duffel to Brest | 443.19 mi (713.24 km) |
| Duffel to Bretigny-sur-Orge | 198.13 mi (318.86 km) |
| Duffel to Breuillet | 203.88 mi (328.11 km) |
| Duffel to Briancon | 439.66 mi (707.57 km) |
| Duffel to Brie-Comte-Robert | 186.70 mi (300.47 km) |
