| Carlow to Bistrita | 1,438.00 mi (2,314.23 km) |
| Carlow to Blaj | 1,445.40 mi (2,326.14 km) |
| Carlow to Bocsa | 1,382.83 mi (2,225.45 km) |
| Carlow to Boldesti-Scaeni | 1,573.77 mi (2,532.74 km) |
| Carlow to Bolintin Vale | 1,584.12 mi (2,549.39 km) |
| Carlow to Borsa | 1,428.47 mi (2,298.91 km) |
| Carlow to Botosani | 1,509.37 mi (2,429.10 km) |
| Carlow to Brad | 1,400.37 mi (2,253.67 km) |
| Carlow to Bragadiru | 1,596.00 mi (2,568.52 km) |
| Carlow to Braila | 1,645.22 mi (2,647.72 km) |
| Carlow to Brasov | 1,533.78 mi (2,468.38 km) |
| Carlow to Breaza | 1,552.80 mi (2,499.00 km) |
| Carlow to Bucharest | 1,599.00 mi (2,573.34 km) |
| Carlow to Buftea | 1,587.47 mi (2,554.78 km) |
| Carlow to Buhusi | 1,543.44 mi (2,483.92 km) |
