| Seia to Borsbeek | 945.54 mi (1,521.70 km) |
| Seia to Boussu | 886.32 mi (1,426.39 km) |
| Seia to Braine-l'Alleud | 916.12 mi (1,474.35 km) |
| Seia to Braine-le-Chateau | 913.07 mi (1,469.45 km) |
| Seia to Braine-le-Comte | 904.87 mi (1,456.25 km) |
| Seia to Brasschaat | 950.45 mi (1,529.60 km) |
| Seia to Brecht | 957.55 mi (1,541.03 km) |
| Seia to Bredene | 904.79 mi (1,456.11 km) |
| Seia to Bree | 975.54 mi (1,569.97 km) |
| Seia to Bruges | 910.21 mi (1,464.85 km) |
| Seia to Brussels | 923.84 mi (1,486.77 km) |
| Seia to Buggenhout | 927.05 mi (1,491.94 km) |
| Seia to Chapelle-lez-Herlaimont | 902.82 mi (1,452.94 km) |
| Seia to Charleroi | 904.18 mi (1,455.14 km) |
| Seia to Chatelet | 906.78 mi (1,459.32 km) |
