| Castle Rock to Borsbeek | 4,870.11 mi (7,837.68 km) |
| Castle Rock to Boussu | 4,880.33 mi (7,854.14 km) |
| Castle Rock to Braine-l'Alleud | 4,889.10 mi (7,868.24 km) |
| Castle Rock to Braine-le-Chateau | 4,885.42 mi (7,862.33 km) |
| Castle Rock to Braine-le-Comte | 4,884.54 mi (7,860.91 km) |
| Castle Rock to Brasschaat | 4,866.24 mi (7,831.45 km) |
| Castle Rock to Brecht | 4,868.55 mi (7,835.18 km) |
| Castle Rock to Bredene | 4,817.81 mi (7,753.52 km) |
| Castle Rock to Bree | 4,909.74 mi (7,901.46 km) |
| Castle Rock to Bruges | 4,827.30 mi (7,768.79 km) |
| Castle Rock to Brussels | 4,881.17 mi (7,855.49 km) |
| Castle Rock to Buggenhout | 4,869.33 mi (7,836.42 km) |
| Castle Rock to Chapelle-lez-Herlaimont | 4,895.47 mi (7,878.50 km) |
| Castle Rock to Charleroi | 4,903.50 mi (7,891.42 km) |
| Castle Rock to Chatelet | 4,906.33 mi (7,895.98 km) |
