Ran into this fellow who is attempting to hike/run the whole AZT (800+ miles) in 3 weeks. This was on Tuesday about 10 am. He had started at the AZ/Mexico border, 72 miles away, on Sunday morning. He has to average about 40 miles per day. Carries about a 10 pound pack. He had been written up in the AZT Assoc e-News that I read a few days before we hiked so I thought we might pass him (we were going south and he was going north). You can follow his progress here http://trackleaders.com/azt. I wish him luck.