| Carlow to Borsbeek | 497.73 mi (801.02 km) |
| Carlow to Boussu | 488.42 mi (786.04 km) |
| Carlow to Braine-l'Alleud | 505.13 mi (812.93 km) |
| Carlow to Braine-le-Chateau | 500.79 mi (805.94 km) |
| Carlow to Braine-le-Comte | 497.52 mi (800.68 km) |
| Carlow to Brasschaat | 496.08 mi (798.37 km) |
| Carlow to Brecht | 500.92 mi (806.15 km) |
| Carlow to Bredene | 434.96 mi (700.00 km) |
| Carlow to Bree | 544.58 mi (876.42 km) |
| Carlow to Bruges | 445.70 mi (717.28 km) |
| Carlow to Brussels | 500.26 mi (805.09 km) |
| Carlow to Buggenhout | 490.43 mi (789.26 km) |
| Carlow to Chapelle-lez-Herlaimont | 507.15 mi (816.18 km) |
| Carlow to Charleroi | 515.04 mi (828.87 km) |
| Carlow to Chatelet | 518.41 mi (834.30 km) |
