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In page Dipsea Race:

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Among the challenges facing participants are the Dipsea Trail's uneven footing, single-track footpaths, and almost invariably steep terrain, featuring about 2,200-foot (671 m) elevation gain and loss over the course. The uniqueness of the Dipsea Race course owes largely to the opportunity for competitors to choose from any of several alternate routes on diverging and converging trails, adding a competitive premium for strategy, experience, and familiarity with the course.