Wow. That's one of the most grueling runs I can remember. I just felt tired pretty much right from the getgo. With the wind blasting out of the canyon on the way up, I was exhausted. Then on the way down I sort of went into a subconcious state where I told my legs and arms to keep moving and then just checked out. Near the end my vision started getting weird and I was battling to maintain what I'd guess was 6 minute pace. Oh well. At least I have a long time to recover. These things happen. I ran 48 minutes out, 42:30 back for 90:30 overall but I was just estimating 15 miles so it may not have been exact.