| Mercer Island to Buena Park (California) | 972.33 mi (1,564.82 km) |
| Mercer Island to Buenaventura Lakes (Florida) | 2,551.76 mi (4,106.67 km) |
| Mercer Island to Buffalo (Minnesota) | 1,354.68 mi (2,180.15 km) |
| Mercer Island to Buffalo (New York) | 2,107.23 mi (3,391.26 km) |
| Mercer Island to Buffalo Grove (Illinois) | 1,704.41 mi (2,742.98 km) |
| Mercer Island to Buford (Georgia) | 2,175.88 mi (3,501.73 km) |
| Mercer Island to Bull Run (Virginia) | 2,298.89 mi (3,699.71 km) |
| Mercer Island to Bullhead City (Arizona) | 946.68 mi (1,523.54 km) |
| Mercer Island to Burbank (California) | 946.30 mi (1,522.92 km) |
| Mercer Island to Burbank (Illinois) | 1,725.69 mi (2,777.23 km) |
| Mercer Island to Burien (Washington) | 7.98 mi (12.84 km) |
| Mercer Island to Burkburnett (Texas) | 1,538.72 mi (2,476.33 km) |
| Mercer Island to Burke (Virginia) | 2,310.97 mi (3,719.15 km) |
| Mercer Island to Burke Centre (Virginia) | 2,308.82 mi (3,715.68 km) |
| Mercer Island to Burleson (Texas) | 1,665.23 mi (2,679.94 km) |
