Bonneville Salt Flats

Bonneville Salt Flats is a large salt pan in northwestern Utah that stretches across much of Tooele County. The hard white crust consists of dense salt and forms a nearly level surface that extends to the horizon.

The area was once part of a huge lake that covered much of Utah and gradually dried up after the last ice age. Evaporation left behind a thick layer of salt that compacted over thousands of years.

For decades, racing enthusiasts and engineers have gathered here to attempt speed records on the perfectly level surface. The open expanse and clear air allow visitors to watch vehicles approach from great distances.

The approach follows Interstate 80, from which an exit leads onto the salt flat. The nearest town with fuel stations and lodging lies to the west in Wendover, which works well for preparation or overnight stays.

The salt layer reaches a thickness of about five feet (1.5 m) at the center and shifts with the seasons due to rain and evaporation. In summer, the surface forms a pattern of polygonal cracks, while in winter it often lies under a thin sheet of water.