150 minutes. That’s the final number for Avatar’s running time, not 7 hours like some of us expected. Of course when you add credits, trailers, commercials, and, since it’s the holidays, a campaign for some charity you won’t donate to, we COULD be looking at around 7 hours.
Cameron has said that one of the contraints on his decision about running time was the Imax runs, which only allow a movie that’s using the system to run 170 minutes at the longest. Of course, if Cameron really wanted a version longer than 170 minutes I believe he would have just invented a new Imax system. Cameron doesn’t work with Imax, Imax works with him.