When do Naruto Shippuden stop?

Answer 1

So far, were no where near the end of the whole Narutoseries, so there's no telling when Kisimoto will stop the series. The anime [in this case] is aired after the manga is written. Whenever the anime gets too close to the manga, they make up 'filler episodes' which are basically episodes that have nothing to do with the plot, but is made to slow down the anime. The series will stop when Kisimoto has the plot resolved, which seems far from reach because the current plot with Sasuke defeating Itachi and the Akatsuki continually after Naruto, we have a long way to go.