Punters who backed Quickthorn's rivals were left frustrated as the stayer turned the Weatherbys Hamilton Lonsdale Cup into a procession.
Tom Marquand obtained a big lead early on and their York rivals were never within striking distance. The Group 2 had earlier lost its lustre when the big two, Stradivarius and Trueshan, were taken out.
But Quickthorn stamped his authority on the field with the all-the-way performance, crossing the line 14 lengths ahead. Marquand was quick to deflect praised for his inspired ride to Quickthorn, who returned at odds of 9-4 in the betting.