| Key West to Bound Brook (New Jersey) | 1,182.24 mi (1,902.62 km) |
| Key West to Bountiful (Utah) | 2,064.25 mi (3,322.09 km) |
| Key West to Bourbonnais (Illinois) | 1,200.74 mi (1,932.41 km) |
| Key West to Bowie (Maryland) | 1,036.91 mi (1,668.75 km) |
| Key West to Bowling Green (Kentucky) | 900.46 mi (1,449.15 km) |
| Key West to Bowling Green (Ohio) | 1,166.67 mi (1,877.57 km) |
| Key West to Box Elder (South Dakota) | 1,805.93 mi (2,906.36 km) |
| Key West to Boynton Beach (Florida) | 172.03 mi (276.85 km) |
| Key West to Bozeman (Montana) | 2,183.82 mi (3,514.52 km) |
| Key West to Bradenton (Florida) | 208.14 mi (334.97 km) |
| Key West to Bradfordville (Florida) | 440.99 mi (709.70 km) |
| Key West to Bradley (Illinois) | 1,198.95 mi (1,929.53 km) |
| Key West to Bradley Gardens (New Jersey) | 1,179.83 mi (1,898.76 km) |
| Key West to Brainerd (Minnesota) | 1,655.26 mi (2,663.88 km) |
| Key West to Brambleton (Virginia) | 1,026.45 mi (1,651.91 km) |
