Any of you guys hiked or ran around here? I'm going here with the In-Laws, wife and 5 year old son in early July...It's $85 for a helicopter ride OUT after making the hike down the mountain. I was thinking it might be fun actually running out of there, if I leave first thing in the morning before it gets to be too hot. I'm planning on carrying my 2.1liter camelback with me and definitely my cellphone. Reading about the temperatures is really the only thing that makes me nervous. Average temps in the 90's during July so that's my only concern. Suggestions? Ideas? "Water - bring at least 70 ounces per-person for the hike down. More if you are hiking in midday. I have heard a report of at least one person dying of heatstroke hiking out of the canyon, so the danger is real." http://www.havasufalls.net/havasupai-hiking.shtml "This is 8 miles from Hualapai Hilltop, and 2,000 feet lower in elevation." http://www.americansouthwest.net/arizona/grand_canyon/supai-hiking.html

I know some folks over on the Extreme Running forum at Kickrunners have run the Canyon before. Might be beneficial to make an inquiry over there. Have fun!