I think you will struggle to see anyone get near Carol's time, unless they are a sub 70 half and can descend (hit return bar here) Wasdale - I ran 4.30 ish the week after skiddaw (so would have had sore/stiff legs) on a wet day wearing gore tex all the way and having no idea where I was going - so I am sure with the right conditions etc it is beatable - more so than Carol's