The Whole Enchilada ride is about 27 miles of almost-all-downhill mountain bike sweetness that starts at about 10,300 ft, climbs to 11,200 ft and then pretty much plunges all the way down to the Colorado River- about 7000 ft of descending.
Also cool is the other two Enduro style events that they are promoting. I've done the trail they are using on the Kennebec Pass and that is one of the finest single routes in Colorado. I haven't done the Steamboat bit, but I'm sure its awesome too.
From the Promoter: