Difficulty rating of some popular 100 milers.

This was taken from Ultrarunner (apparently) but I took it off some posts on Ultralist. I think it works from polls taken from finishers of these races. So if Western States is a medium then, these other races are either harder or easier.

Excerpted from March 2008, UltraRunning magazine,
"Relative Difficulty of Several Trail Runs" original
by Gary Wang:

Hardrock---------------...1.55
HURT-------------------...1.31
Wasatch Front----------...1.17
Bear-------------------...1.13
Bighorn----------------...1.12
Massanutten------------...1.11
Angeles Crest----------...1.08
Superior Sawtooth------...1.06
Cascade Crest Classic--...1.05
Leadville Trail--------...1.03
Western States---------...1.00 **************
San Diego--------------...0.99
Rio Del Lago-----------...0.93
Haliburton Forest------...0.91
Mohican Trail----------...0.90
Javelina Jundred-------...0.89
Old Dominion-----------...0.88
Arkansas Traveller-----...0.88
Kettle Moraine---------...0.88
Heartland--------------...0.84
Vermont----------------...0.84
Umstead----------------...0.81
Rocky Raccoon----------...0.81

I would like to work on this list as a goal list for my life, it would be nice to go see all these courses. ---ken