| Duffel to Borsbeek | 7.06 mi (11.36 km) |
| Duffel to Boussu | 55.81 mi (89.82 km) |
| Duffel to Braine-l'Alleud | 29.66 mi (47.73 km) |
| Duffel to Braine-le-Chateau | 30.78 mi (49.54 km) |
| Duffel to Braine-le-Comte | 38.38 mi (61.77 km) |
| Duffel to Brasschaat | 13.39 mi (21.56 km) |
| Duffel to Brecht | 18.00 mi (28.96 km) |
| Duffel to Bredene | 67.40 mi (108.47 km) |
| Duffel to Bree | 46.32 mi (74.54 km) |
| Duffel to Bruges | 56.52 mi (90.95 km) |
| Duffel to Brussels | 18.90 mi (30.42 km) |
| Duffel to Buggenhout | 15.39 mi (24.77 km) |
| Duffel to Chapelle-lez-Herlaimont | 44.93 mi (72.31 km) |
| Duffel to Charleroi | 48.50 mi (78.06 km) |
| Duffel to Chatelet | 48.37 mi (77.84 km) |
