| Potomac to Bicaz | 4,854.51 mi (7,812.57 km) |
| Potomac to Bistrita | 4,784.86 mi (7,700.50 km) |
| Potomac to Blaj | 4,800.72 mi (7,726.02 km) |
| Potomac to Bocsa | 4,745.46 mi (7,637.08 km) |
| Potomac to Boldesti-Scaeni | 4,929.98 mi (7,934.04 km) |
| Potomac to Bolintin Vale | 4,943.55 mi (7,955.87 km) |
| Potomac to Borsa | 4,770.12 mi (7,676.77 km) |
| Potomac to Botosani | 4,841.74 mi (7,792.03 km) |
| Potomac to Brad | 4,758.57 mi (7,658.18 km) |
| Potomac to Bragadiru | 4,955.31 mi (7,974.79 km) |
| Potomac to Braila | 4,994.38 mi (8,037.68 km) |
| Potomac to Brasov | 4,887.55 mi (7,865.75 km) |
| Potomac to Breaza | 4,909.12 mi (7,900.46 km) |
| Potomac to Bucharest | 4,957.80 mi (7,978.80 km) |
| Potomac to Buftea | 4,946.01 mi (7,959.84 km) |
