| Mercer Island to Bicaz | 5,635.44 mi (9,069.36 km) |
| Mercer Island to Bistrita | 5,593.67 mi (9,002.14 km) |
| Mercer Island to Blaj | 5,644.49 mi (9,083.92 km) |
| Mercer Island to Bocsa | 5,653.92 mi (9,099.11 km) |
| Mercer Island to Boldesti-Scaeni | 5,755.74 mi (9,262.97 km) |
| Mercer Island to Bolintin Vale | 5,788.53 mi (9,315.73 km) |
| Mercer Island to Borsa | 5,563.08 mi (8,952.91 km) |
| Mercer Island to Botosani | 5,590.96 mi (8,997.79 km) |
| Mercer Island to Brad | 5,626.67 mi (9,055.24 km) |
| Mercer Island to Bragadiru | 5,797.31 mi (9,329.87 km) |
| Mercer Island to Braila | 5,772.88 mi (9,290.55 km) |
| Mercer Island to Brasov | 5,707.47 mi (9,185.29 km) |
| Mercer Island to Breaza | 5,739.16 mi (9,236.28 km) |
| Mercer Island to Bucharest | 5,795.60 mi (9,327.12 km) |
| Mercer Island to Buftea | 5,784.02 mi (9,308.48 km) |
