I watched the entire series of Jericho in one sitting(It helped that at the time I was unemployed with just my computer and Hulu to entertain me). About 15 hours worth but I felt like I could take on more. And that show is about as intense.
24 is a cool show but I get tuckered halfway through one season as it is a lot of energy with little to show for it. I am about willing to bet that in every season nothing really effective gets done until 3/4's through. Like a Tom Clancy novel.
Still, I would have done the gauntlet. 86 hours? Child's play...