Ski Michigan Calendar of Events Cross Country Ski Headquarters – Labor Day Weekend Clearance Sale! – August 31 to September 3, 2018 August 2018: 31: Cross Country Ski Headquarters – Labor Day Weekend Clearance Sale! – August 31 to September 3, 2018 October 2018: 19: Crystal Mountain – Peaktoberfest – October 19 – 21, 2018 Ski Michigan Events via Facebook Ski Michigan <>
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