Go Out of Bounds. Experience the freedom of the hills in the Alps of America, with five distinct ranges emanating from within striking distance of the resort. Venture north to the Boulder, Smoky or Sawtooth Mountain Ranges and feel the pristine mountain air whistle through your hair as you drop into empty fields of untouched powder. Hire a guide from Sun Valley Trekking or Sawtooth Mountain Guides and let them show you the goods that will make you feel like you just stepped into the pages of Powder Magazine.