It depends on the individuals skill level. On All Trails app it is rated Moderate. Going up the south side is steep, but if you go on the north side of the loop and hit the flag first it took me an hour and a half.
It was much steeper than I had anticipated, and with little tree coverage, it was also much more hot. But with good company and the refreshing coolness of the mine, for me it was well worth any discomfort.
It all depends on how fast you go. My group took up to 30-45 minutes to get there. Part of it is steep, so brace yourselves for that.
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