| Carlow to Berga | 845.79 mi (1,361.16 km) |
| Carlow to Berja | 1,121.16 mi (1,804.33 km) |
| Carlow to Bermeo | 678.22 mi (1,091.48 km) |
| Carlow to Berriozar | 731.89 mi (1,177.86 km) |
| Carlow to Betanzos | 662.55 mi (1,066.27 km) |
| Carlow to Betera | 964.60 mi (1,552.37 km) |
| Carlow to Bilbao | 686.62 mi (1,105.01 km) |
| Carlow to Binefar | 829.80 mi (1,335.44 km) |
| Carlow to Binisalem | 1,019.04 mi (1,639.99 km) |
| Carlow to Blanes | 893.83 mi (1,438.48 km) |
| Carlow to Boadilla del Monte | 870.36 mi (1,400.70 km) |
| Carlow to Boiro | 709.26 mi (1,141.44 km) |
| Carlow to Bolanos de Calatrava | 975.76 mi (1,570.34 km) |
| Carlow to Bollullos de la Mitacion | 1,071.45 mi (1,724.33 km) |
| Carlow to Bollullos par del Condado | 1,070.76 mi (1,723.22 km) |
