| Castro Valley to Borsbeek | 5,495.91 mi (8,844.81 km) |
| Castro Valley to Boussu | 5,516.76 mi (8,878.37 km) |
| Castro Valley to Braine-l'Alleud | 5,520.15 mi (8,883.82 km) |
| Castro Valley to Braine-le-Chateau | 5,517.03 mi (8,878.80 km) |
| Castro Valley to Braine-le-Comte | 5,517.62 mi (8,879.76 km) |
| Castro Valley to Brasschaat | 5,491.17 mi (8,837.18 km) |
| Castro Valley to Brecht | 5,492.18 mi (8,838.81 km) |
| Castro Valley to Bredene | 5,451.52 mi (8,773.38 km) |
| Castro Valley to Bree | 5,530.00 mi (8,899.67 km) |
| Castro Valley to Bruges | 5,459.90 mi (8,786.85 km) |
| Castro Valley to Brussels | 5,510.85 mi (8,868.86 km) |
| Castro Valley to Buggenhout | 5,498.48 mi (8,848.95 km) |
| Castro Valley to Chapelle-lez-Herlaimont | 5,528.91 mi (8,897.92 km) |
| Castro Valley to Charleroi | 5,536.69 mi (8,910.44 km) |
| Castro Valley to Chatelet | 5,539.06 mi (8,914.26 km) |
