| Carlow to Borgosesia | 840.47 mi (1,352.60 km) |
| Carlow to Boscoreale | 1,302.95 mi (2,096.89 km) |
| Carlow to Boscotrecase | 1,301.52 mi (2,094.59 km) |
| Carlow to Botticino Sera | 921.16 mi (1,482.47 km) |
| Carlow to Bovalino Marina | 1,497.91 mi (2,410.66 km) |
| Carlow to Boves | 881.84 mi (1,419.18 km) |
| Carlow to Boville Ernica | 1,222.30 mi (1,967.11 km) |
| Carlow to Bovisio Masciago | 877.26 mi (1,411.81 km) |
| Carlow to Bovolone | 967.35 mi (1,556.80 km) |
| Carlow to Bra | 873.86 mi (1,406.33 km) |
| Carlow to Bracciano | 1,154.21 mi (1,857.53 km) |
| Carlow to Brandizzo | 850.36 mi (1,368.52 km) |
| Carlow to Breganze | 964.55 mi (1,552.29 km) |
| Carlow to Brembate | 892.77 mi (1,436.78 km) |
| Carlow to Brescia | 920.43 mi (1,481.29 km) |
