| Flensburg to Borsbeek | 321.85 mi (517.97 km) |
| Flensburg to Boussu | 382.23 mi (615.15 km) |
| Flensburg to Braine-l'Alleud | 353.66 mi (569.15 km) |
| Flensburg to Braine-le-Chateau | 356.14 mi (573.16 km) |
| Flensburg to Braine-le-Comte | 364.22 mi (586.16 km) |
| Flensburg to Brasschaat | 316.63 mi (509.56 km) |
| Flensburg to Brecht | 309.69 mi (498.40 km) |
| Flensburg to Bredene | 363.41 mi (584.85 km) |
| Flensburg to Bree | 298.69 mi (480.69 km) |
| Flensburg to Bruges | 357.09 mi (574.68 km) |
| Flensburg to Brussels | 344.79 mi (554.88 km) |
| Flensburg to Buggenhout | 340.30 mi (547.66 km) |
| Flensburg to Chapelle-lez-Herlaimont | 368.05 mi (592.31 km) |
| Flensburg to Charleroi | 368.27 mi (592.67 km) |
| Flensburg to Chatelet | 366.29 mi (589.48 km) |
