| Frederick to Bicaz | 4,842.30 mi (7,792.92 km) |
| Frederick to Bistrita | 4,772.90 mi (7,681.25 km) |
| Frederick to Blaj | 4,789.31 mi (7,707.65 km) |
| Frederick to Bocsa | 4,734.89 mi (7,620.08 km) |
| Frederick to Boldesti-Scaeni | 4,918.59 mi (7,915.71 km) |
| Frederick to Bolintin Vale | 4,932.47 mi (7,938.04 km) |
| Frederick to Borsa | 4,757.90 mi (7,657.10 km) |
| Frederick to Botosani | 4,829.05 mi (7,771.61 km) |
| Frederick to Brad | 4,747.42 mi (7,640.24 km) |
| Frederick to Bragadiru | 4,944.21 mi (7,956.94 km) |
| Frederick to Braila | 4,982.44 mi (8,018.47 km) |
| Frederick to Brasov | 4,875.98 mi (7,847.13 km) |
| Frederick to Breaza | 4,897.75 mi (7,882.16 km) |
| Frederick to Bucharest | 4,946.64 mi (7,960.85 km) |
| Frederick to Buftea | 4,934.84 mi (7,941.85 km) |
