| Key Biscayne to Blue Island (Illinois) | 1,183.61 mi (1,904.83 km) |
| Key Biscayne to Blue Springs (Missouri) | 1,231.84 mi (1,982.46 km) |
| Key Biscayne to Bluffdale (Utah) | 2,087.45 mi (3,359.42 km) |
| Key Biscayne to Bluffton (Indiana) | 1,078.98 mi (1,736.45 km) |
| Key Biscayne to Bluffton (South Carolina) | 453.05 mi (729.11 km) |
| Key Biscayne to Blythe (California) | 2,129.31 mi (3,426.80 km) |
| Key Biscayne to Blytheville (Arkansas) | 912.53 mi (1,468.57 km) |
| Key Biscayne to Boca Raton (Florida) | 47.42 mi (76.32 km) |
| Key Biscayne to Boerne (Texas) | 1,168.48 mi (1,880.48 km) |
| Key Biscayne to Bogalusa (Louisiana) | 686.72 mi (1,105.16 km) |
| Key Biscayne to Boiling Springs (South Carolina) | 655.24 mi (1,054.51 km) |
| Key Biscayne to Boise (Idaho) | 2,367.27 mi (3,809.76 km) |
| Key Biscayne to Bolingbrook (Illinois) | 1,194.54 mi (1,922.42 km) |
| Key Biscayne to Bolivar (Missouri) | 1,131.31 mi (1,820.67 km) |
| Key Biscayne to Bon Air (Virginia) | 831.26 mi (1,337.78 km) |
