| Carlow to Bougival | 480.76 mi (773.70 km) |
| Carlow to Bouguenais | 455.97 mi (733.82 km) |
| Carlow to Boulogne-Billancourt | 485.66 mi (781.59 km) |
| Carlow to Boulogne-sur-Mer | 392.90 mi (632.32 km) |
| Carlow to Bourg-de-Peage | 763.41 mi (1,228.59 km) |
| Carlow to Bourg-en-Bresse | 710.44 mi (1,143.35 km) |
| Carlow to Bourg-la-Reine | 490.69 mi (789.68 km) |
| Carlow to Bourg-les-Valence | 763.23 mi (1,228.31 km) |
| Carlow to Bourges | 573.22 mi (922.51 km) |
| Carlow to Bourgoin-Jallieu | 742.56 mi (1,195.03 km) |
| Carlow to Bressuire | 503.31 mi (810.00 km) |
| Carlow to Brest | 324.91 mi (522.89 km) |
| Carlow to Bretigny-sur-Orge | 497.64 mi (800.87 km) |
| Carlow to Breuillet | 494.90 mi (796.47 km) |
| Carlow to Briancon | 822.69 mi (1,324.00 km) |
