| Louisville to Blue Island (Illinois) | 264.18 mi (425.15 km) |
| Louisville to Blue Springs (Missouri) | 469.20 mi (755.10 km) |
| Louisville to Bluffdale (Utah) | 1,408.98 mi (2,267.54 km) |
| Louisville to Bluffton (Indiana) | 179.79 mi (289.34 km) |
| Louisville to Bluffton (South Carolina) | 489.83 mi (788.31 km) |
| Louisville to Blythe (California) | 1,644.70 mi (2,646.89 km) |
| Louisville to Blytheville (Arkansas) | 280.89 mi (452.05 km) |
| Louisville to Boca Raton (Florida) | 876.15 mi (1,410.03 km) |
| Louisville to Boerne (Texas) | 945.50 mi (1,521.64 km) |
| Louisville to Bogalusa (Louisiana) | 563.74 mi (907.25 km) |
| Louisville to Boiling Springs (South Carolina) | 296.52 mi (477.21 km) |
| Louisville to Boise (Idaho) | 1,631.14 mi (2,625.07 km) |
| Louisville to Bolingbrook (Illinois) | 275.97 mi (444.14 km) |
| Louisville to Bolivar (Missouri) | 425.29 mi (684.44 km) |
| Louisville to Bon Air (Virginia) | 442.84 mi (712.68 km) |
