Bushwalk Australia

http://www.marathondessables.com/en/stage-1.html

few aussies and nzers in this one in Morocco...

Yeah it's mostly North-African and French athletes doing this one. 240 km in 6 days, carrying your own food. I don't know any race tougher than this one. An ironman is a piece of cake compared to this.

well its up there, some argue the barkley is tougher, its actually a rogaine, , only 13 runners have every completed the 100 mile course inside the 60 hour cutoff. approaching 20,000m of climbing....
http://www.mattmahoney.net/barkley/

lol when you have only 13 runners in 35 years running below the cutoff, maybe it's time to modify it...

aparently thats the way the organiser likes it... he tells people if they want to have a good chance to finish, go and run another ultra....

new york times article on the barkley

http://www.nytimes.com/2013/03/28/sport ... =all&_r=1&

marathon de sables probably needs little introduction