| Mountain Ash to Borsbeek | 340.08 mi (547.31 km) |
| Mountain Ash to Boussu | 323.17 mi (520.10 km) |
| Mountain Ash to Braine-l'Alleud | 342.58 mi (551.33 km) |
| Mountain Ash to Braine-le-Chateau | 338.08 mi (544.09 km) |
| Mountain Ash to Braine-le-Comte | 333.96 mi (537.46 km) |
| Mountain Ash to Brasschaat | 339.43 mi (546.26 km) |
| Mountain Ash to Brecht | 345.10 mi (555.38 km) |
| Mountain Ash to Bredene | 275.24 mi (442.96 km) |
| Mountain Ash to Bree | 387.88 mi (624.23 km) |
| Mountain Ash to Bruges | 286.13 mi (460.49 km) |
| Mountain Ash to Brussels | 339.04 mi (545.63 km) |
| Mountain Ash to Buggenhout | 330.35 mi (531.64 km) |
| Mountain Ash to Chapelle-lez-Herlaimont | 342.89 mi (551.83 km) |
| Mountain Ash to Charleroi | 350.57 mi (564.19 km) |
| Mountain Ash to Chatelet | 354.07 mi (569.82 km) |
