Your flight will commence at the posted coordinates, then fly west till you find the the center of the roundabout! N 40° 27.941' & W 105° 01.222'
Now use Google Earth and take a flight of 133° for a distance 'tween .30 mi & .40 miles.
Once you have located the center of the Navigational Rose that is on the tarmac. Input the coordinates into your GPS.
From there your flight pattern to the cache will be 329.37° T