Full UTMB story (parts 1-3) is up now, including "Imaginary dragons & stampeding cows: the hallucination-filled closing".

The UTMB was an amazing experience -- highly recommended if you want a big goal race. I also recommend the shorter (but still heavy) courses associated with the same event. I think the CCC (98km) would make an awesome and somewhat more reasonable ultra that would involve only one night out on the course. I really want to go back and hike some of the parts of the course that I've only seen in the dark or bad weather. Just stunning out there.