20 miles or so West of Milford, UT is Frisco Peak, elevation 9660 ft. At the base of the mountain is the ghost town of Frisco. At the top of the peak is a hang gliding launch pad that is one of the best spots in the country. I haven't read any documentation, but I talked to someone who lived in Milford who claimed to have spoken to someone who glided from Frisco to Park City. That is like 150 miles. CRAZY.