The following table shows the cumulative inches of snow in Silverton on the first day of each month. Note that the course conditions on run day are most closely correlated with how much snow fell late in the season, for instance, the 1993 running came after a winter of very heavy total snowfall, but there was little snow on the course because most of it fell before March. In contrast, the run was cancelled in 1995 due to the snowpack, much of which fell during March, April, and May. Stay tuned to see what 2016 conditions will be.
The decision of whether yearly snow pack conditions will allow the Hardrock 100 to be held or force it to be canceled, is based on the Snow Water Equivalent (SWE) measured at the Red Mountain Pass Snotel Site. At any time before June 1 of each year that the SWE is equal to or less than 23", the green light is on for that year. If the SWE is greater than 23" on June 1, a review of the situation will be made by run management and the decision announced on that date.