| Mercer Island to Bougival | 4,990.23 mi (8,031.00 km) |
| Mercer Island to Bouguenais | 4,979.79 mi (8,014.20 km) |
| Mercer Island to Boulogne-Billancourt | 4,994.60 mi (8,038.03 km) |
| Mercer Island to Boulogne-sur-Mer | 4,872.55 mi (7,841.62 km) |
| Mercer Island to Bourg-de-Peage | 5,285.77 mi (8,506.62 km) |
| Mercer Island to Bourg-en-Bresse | 5,223.29 mi (8,406.07 km) |
| Mercer Island to Bourg-la-Reine | 4,999.69 mi (8,046.22 km) |
| Mercer Island to Bourg-les-Valence | 5,286.79 mi (8,508.26 km) |
| Mercer Island to Bourges | 5,097.23 mi (8,203.20 km) |
| Mercer Island to Bourgoin-Jallieu | 5,260.16 mi (8,465.42 km) |
| Mercer Island to Bressuire | 5,030.67 mi (8,096.08 km) |
| Mercer Island to Brest | 4,831.30 mi (7,775.23 km) |
| Mercer Island to Bretigny-sur-Orge | 5,008.88 mi (8,061.02 km) |
| Mercer Island to Breuillet | 5,007.84 mi (8,059.34 km) |
| Mercer Island to Briancon | 5,336.25 mi (8,587.86 km) |
