has anyone done this before? I am feeling very tempted - just not quite sure due to the comments on the entry form. "Arduous terrain; not for novices; bring food rations and a map". Actually sounds really good, but also a little bit as if one might get lost in the middle of the wilderness and potentially get eaten by a bear. Wouldn't exactly call myself a novice with various half-marathons and a marathon under my belt, but somehow it sounds a bit scary (which, on the other hand, is exactly the attraction). Anyone with any experience of previous events or knowledge of the route??? Thanks!