In reply to Red Rover:
If you look at the planned splits (on the tracker page) there are several points where the schedule had 120 minute stops - so she should have managed loads of sleep during the 6-7 days (yeah right). I wonder how much time she actually was asleep during the whole thing.
It appears (from the timings) that you don't actually have to be going that fast on these multi-day epics, you just need to be able to keep going, and going, and going, and manage with bugger all sleep without hallucinogenically going off route.