It is called the Marathon of the Sands. It is a 6 day, 150 mile run across the incredibly hot southern Moroccan Sahara. After finishing the race, a British runner's feet were so blistered that he had to have a skin grafts.
To learn more about this suicidal run, click here

I agree, this does not sound like a very enjoyable run, but the adventure of it makes me pause for a minute and say - "maybe some day" :)
Posted by: athorn | January 07, 2009 at 11:05 AM
Wow, that's freakin insane!
Posted by: Nathan Hangen | January 07, 2009 at 12:03 PM
I would melt. There's no way I could ever do it.
Posted by: Matt Johnson | January 09, 2009 at 08:31 AM