
The courses all start at the Bonneville Salt Flats Speedway, and run the same section of Salt Flats that the land-speed records are set each year at "Speedweek". This gives an 10hr duration for the 50K, a 14 hr duration to the 50 miler, and a 36 hr cutoff for the 100 making all three accommodating to a wide variety of runners.

Once again you have a choice of 50K, 50 mile and 100 mile distances, with all three events starting at the same time at 7AM on Friday, and the finish cutoff for the 50K at 5pm Friday afternoon, the 50 mile at 9PM Friday evening, and the 100 at 7PM Saturday evening.
