 Race bib number one is always given to the person deemed to be the least likely to finish one lap out of all who have applied; a "human sacrifice," as Cantrell calls it.The course itself, which has changed distance, route, and elevation many times since its inaugural run, currently consists of a unmarked loop with no aid stations except water at two points along the route.The loop begins and ends at the yellow road gate where the runners' and supporters' parked cars stay.