CrossFit Prevail provides certified CrossFit instruction in a first class facility located in McHenry, IL.  We can serve McHenry, Johnsburg, Woodstock, Harvard, Hebron, Richmond, Spring Grove, Crystal Lake, Bull Valley, Cary, Oakwood Hills, Lakemoor, Volo, Fox Lake, Round Lake, Wauconda, Mundelein, Lake Zurich, Lake Geneva, WI, Twin Lakes, WI, as well as many other towns.