| Opoczno to Borsbeek | 681.67 mi (1,097.05 km) |
| Opoczno to Boussu | 719.93 mi (1,158.62 km) |
| Opoczno to Braine-l'Alleud | 691.90 mi (1,113.50 km) |
| Opoczno to Braine-le-Chateau | 696.39 mi (1,120.73 km) |
| Opoczno to Braine-le-Comte | 703.18 mi (1,131.65 km) |
| Opoczno to Brasschaat | 680.63 mi (1,095.38 km) |
| Opoczno to Brecht | 674.02 mi (1,084.73 km) |
| Opoczno to Bredene | 746.09 mi (1,200.71 km) |
| Opoczno to Bree | 634.97 mi (1,021.89 km) |
| Opoczno to Bruges | 735.65 mi (1,183.91 km) |
| Opoczno to Brussels | 690.79 mi (1,111.72 km) |
| Opoczno to Buggenhout | 695.73 mi (1,119.67 km) |
| Opoczno to Chapelle-lez-Herlaimont | 698.46 mi (1,124.07 km) |
| Opoczno to Charleroi | 692.92 mi (1,115.14 km) |
| Opoczno to Chatelet | 689.32 mi (1,109.36 km) |
