| Carlow to Benevento | 1,295.38 mi (2,084.71 km) |
| Carlow to Bergamo | 893.04 mi (1,437.20 km) |
| Carlow to Bernalda | 1,400.19 mi (2,253.38 km) |
| Carlow to Bertinoro | 1,053.98 mi (1,696.22 km) |
| Carlow to Besana in Brianza | 878.46 mi (1,413.75 km) |
| Carlow to Besozzo | 849.06 mi (1,366.42 km) |
| Carlow to Biancavilla | 1,480.28 mi (2,382.28 km) |
| Carlow to Biassono | 880.81 mi (1,417.53 km) |
| Carlow to Bibbiano | 968.76 mi (1,559.07 km) |
| Carlow to Bibbiena | 1,063.19 mi (1,711.04 km) |
| Carlow to Biella | 840.14 mi (1,352.07 km) |
| Carlow to Bisceglie | 1,353.26 mi (2,177.87 km) |
| Carlow to Bisignano | 1,430.89 mi (2,302.79 km) |
| Carlow to Bitetto | 1,372.50 mi (2,208.83 km) |
| Carlow to Bitonto | 1,365.99 mi (2,198.34 km) |
