| Grefrath to Borsbeek | 80.85 mi (130.11 km) |
| Grefrath to Boussu | 127.26 mi (204.81 km) |
| Grefrath to Braine-l'Alleud | 96.85 mi (155.86 km) |
| Grefrath to Braine-le-Chateau | 100.82 mi (162.25 km) |
| Grefrath to Braine-le-Comte | 108.69 mi (174.91 km) |
| Grefrath to Brasschaat | 80.01 mi (128.76 km) |
| Grefrath to Brecht | 73.70 mi (118.61 km) |
| Grefrath to Bredene | 145.58 mi (234.30 km) |
| Grefrath to Bree | 35.65 mi (57.37 km) |
| Grefrath to Bruges | 134.99 mi (217.25 km) |
| Grefrath to Brussels | 92.67 mi (149.15 km) |
| Grefrath to Buggenhout | 95.61 mi (153.87 km) |
| Grefrath to Chapelle-lez-Herlaimont | 107.92 mi (173.68 km) |
| Grefrath to Charleroi | 105.37 mi (169.57 km) |
| Grefrath to Chatelet | 102.52 mi (164.99 km) |
