What woulD happen if the death note ran out of pages? Can it run out of pages?

I don't think it can run out of pages. Light used it nonstop for over six years. If it were ever to run out on anyone, it would run out on him ten times over.

maybe if you use it to much you relize how many people are around the world.

It actually says in the manga that it will never run out of pages. In book 6, I believe. I may be wrong.

It never runs out of pages ever as Ryuuk tells Light sometime in the manga

the book has 60 pages. so (60 fronts, 60 backs) It has 30-something lines per page. if you run out you can ask the shinigami for another one. I think theres more information about it though. I read this in book 13, the how to read guide.

Same thing as everyne else is saying! XD

I actually remember it saying something about this in the manga, or maybe it was the anime. But all I remember was it said that it can run out of pages, but you just ask your shinigami for a new one.

I think they regenerate somehow...