The Bonneville Salt Flats is a densely-packed salt pan in Tooele County in northwestern Utah. The area is a remnant of the Pleistocene Lake Bonneville and is the largest of many salt flats located west of the Great Salt Lake. The property is public land managed by the Bureau of Land Management and is known for land speed records at the "Bonneville Speedway".There are two major land speed events that take place at the Bonneville Salt Flats. Bonneville "Speed Week" takes place mid-August while the "World Finals" take place early October. The Southern California Timing Association organizes and plans these events along with prepping and maintaining the salt.