| Ferentino to Bistrita | 669.88 mi (1,078.07 km) |
| Ferentino to Blaj | 614.00 mi (988.14 km) |
| Ferentino to Bocsa | 494.26 mi (795.44 km) |
| Ferentino to Boldesti-Scaeni | 681.50 mi (1,096.76 km) |
| Ferentino to Bolintin Vale | 658.81 mi (1,060.26 km) |
| Ferentino to Borsa | 695.08 mi (1,118.62 km) |
| Ferentino to Botosani | 779.19 mi (1,253.99 km) |
| Ferentino to Brad | 565.00 mi (909.27 km) |
| Ferentino to Bragadiru | 668.22 mi (1,075.40 km) |
| Ferentino to Braila | 776.58 mi (1,249.79 km) |
| Ferentino to Brasov | 675.57 mi (1,087.22 km) |
| Ferentino to Breaza | 667.28 mi (1,073.88 km) |
| Ferentino to Bucharest | 675.32 mi (1,086.82 km) |
| Ferentino to Buftea | 669.95 mi (1,078.17 km) |
| Ferentino to Buhusi | 750.28 mi (1,207.47 km) |
