| Carlow to Barcellona-Pozzo di Gotto | 1,465.10 mi (2,357.84 km) |
| Carlow to Bareggio | 877.91 mi (1,412.87 km) |
| Carlow to Barga | 997.00 mi (1,604.51 km) |
| Carlow to Bari | 1,372.41 mi (2,208.68 km) |
| Carlow to Barletta | 1,341.46 mi (2,158.86 km) |
| Carlow to Baronissi | 1,314.26 mi (2,115.10 km) |
| Carlow to Barrafranca | 1,473.68 mi (2,371.65 km) |
| Carlow to Bassano del Grappa | 968.20 mi (1,558.16 km) |
| Carlow to Battipaglia | 1,328.42 mi (2,137.89 km) |
| Carlow to Beinasco | 849.15 mi (1,366.58 km) |
| Carlow to Bellinzago Novarese | 859.86 mi (1,383.81 km) |
| Carlow to Belluno | 971.67 mi (1,563.75 km) |
| Carlow to Belmonte Mezzagno | 1,409.12 mi (2,267.76 km) |
| Carlow to Belpasso | 1,487.83 mi (2,394.44 km) |
| Carlow to Belvedere Marittimo | 1,410.86 mi (2,270.56 km) |
