Trail Crest is at 13,600 feet and the cables are at around 12,700 feet. I would guess from the pictures that the chute could be about 1,500 feet long (1,320 feet is 1/4 mile). Nonetheless, the steepness of the slope is what makes it slow going. It would be equivalent to walking up the steps of a skyscraper, but up at 13,000 feet.