HomeRacingDragbike RacingXDAMIROCK Spring Nationals Schedule XDA MIROCK Spring Nationals Schedule Here is the weekend schedule for MIR’s first MIROCK motorcycle drag racing event of 2014, the Fast By Gast Spring Nationals, April 25-27. Jack Korpela Previous ArticleKing Moves Up on All-time Quickest Dragbike Racer List Next ArticleMark Cox Collects Back-to-back Nitro Harley IHRA Wins 12 Years Apart, Rides Record Books April 23, 2014