| Karlovac to Bistrita | 441.84 mi (711.07 km) |
| Karlovac to Blaj | 405.33 mi (652.32 km) |
| Karlovac to Bocsa | 298.74 mi (480.78 km) |
| Karlovac to Boldesti-Scaeni | 510.31 mi (821.27 km) |
| Karlovac to Bolintin Vale | 503.74 mi (810.70 km) |
| Karlovac to Borsa | 457.81 mi (736.78 km) |
| Karlovac to Botosani | 549.88 mi (884.94 km) |
| Karlovac to Brad | 351.43 mi (565.57 km) |
| Karlovac to Bragadiru | 515.36 mi (829.39 km) |
| Karlovac to Braila | 601.77 mi (968.46 km) |
| Karlovac to Brasov | 486.71 mi (783.28 km) |
| Karlovac to Breaza | 491.25 mi (790.59 km) |
| Karlovac to Bucharest | 520.70 mi (837.98 km) |
| Karlovac to Buftea | 511.41 mi (823.03 km) |
| Karlovac to Buhusi | 540.66 mi (870.10 km) |
