| North Potomac to Borsbeek | 3,858.24 mi (6,209.25 km) |
| North Potomac to Boussu | 3,850.16 mi (6,196.23 km) |
| North Potomac to Braine-l'Alleud | 3,867.17 mi (6,223.62 km) |
| North Potomac to Braine-le-Chateau | 3,862.84 mi (6,216.65 km) |
| North Potomac to Braine-le-Comte | 3,859.58 mi (6,211.40 km) |
| North Potomac to Brasschaat | 3,856.10 mi (6,205.79 km) |
| North Potomac to Brecht | 3,860.40 mi (6,212.72 km) |
| North Potomac to Bredene | 3,796.64 mi (6,110.10 km) |
| North Potomac to Bree | 3,904.11 mi (6,283.05 km) |
| North Potomac to Bruges | 3,807.29 mi (6,127.25 km) |
| North Potomac to Brussels | 3,862.09 mi (6,215.43 km) |
| North Potomac to Buggenhout | 3,851.97 mi (6,199.15 km) |
| North Potomac to Chapelle-lez-Herlaimont | 3,869.15 mi (6,226.80 km) |
| North Potomac to Charleroi | 3,877.01 mi (6,239.44 km) |
| North Potomac to Chatelet | 3,880.41 mi (6,244.91 km) |
