It's just a tough mnother. If you aren't from the mountains, or if you don't have Lance's lungs and supplements, your chances are slim.
My bud Chase, he trained hard. He lives in Colorado. He waxed me. He made it 75 miles and he was d-o-n-e, Done!
Poor guy, he chugged like hell to get to the turn around and he made it with an hour to spare, not easy at Leadville. he made it over Hope Pass, not once but twice. But that climb, it will just do you in, and it done him in. Not right away, delayed onset and guts got him another 20 miles down the trail.
Chase, come run Ancient Oaks with me, then we'll head to Kettle Morainne. Let's get out of that thin air and off those mountains for a while, we need a little success my bud.