Sun Valley has long been known around the Labor Day time of year as the home of one of the most remarkable non-motorized parades in the country, Wagon Days.  But last year, local endurance athlete Rebecca Rusch, brought a new sort of twist on the non-motorized parade to town, Rebecca's Private Idaho. Heading into the great wide open a rider crosses into another world.  Wildhorse Canyon meets the Copper Basin.   Capitalizing on the lack of tarmac and abundance of top notch gravel roads which criss cross the county, this event run in the European Grand Fondo tradition, sends riders on an odyssey without the pressure of needing to compete, but inviting them to choose their own level of adventure. As many sports do, road cycling has evolved over the recent years with a new category whose machines make riding dirt roads, well, kind of cool and fun. Why is there a picture of an ass in this post? Read on, it will make sense. Wagon Days parade entrant #22.   For the second year in a row, the four legged non-motorized set was joined by the two legged two wheeled contingent adding a new wrinkle to an old horse. …