Some info from my files:
Route: The Ruby Crest Trail
(FT 043) runs from Lamoille Canyon to graveled NV 228 at Harrison Pass.
Best campsites are at Castle Lake, the north fork of Overland Creek, Overland Lake, McCutcheon Creek, and springs 1.5 miles south of McCutcheon Creek.
In dry months, water is unavailable for 13 miles between North Furlong Lake and the north fork of Overland Creek.
The southern 6 miles to Harrison Pass are also dry.
Echo Canyon provides access to Ruby Dome, the range’s highest peak at 11,387 feet.
The Soldier Basin (031) and Soldier-Griswold Trails (032) begin 20 miles north of the town of Lamoille, climbing 5 miles to lakes in Soldier Basin and beyond.
Other useful trunk trails ascend North Furlong Canyon (045), Long Canyon (046), and Overland Canyon (047).
Harrison Pass to McCrutcheon Crk 9m. McCrutcheon Crk to Overland Lk 9m. Overland Lk to Furlong Lk 14m. Furlong LK to Lamoile Cyn 10m.
GO here:
http://www.rubymountains.net/
http://rubymountaintrails.blogspot.com/2010/09/ruby-crest-trail.html
Also put in resources section......