Avatar’s official running time has been announced by Fox to be 161 minutes and 34 seconds. Now, this is tad longer than the 2 ½ hours that had been doing rounds from the past 1 or two months. If we are to take into consideration the trailers then one has to sit for 3 hours. Some new featurettes have also been released for the James Cameron directed film. The new videos play differently from the ones that we have earlier seen and bear a nature documentary tone. The detailing of the visuals definitely have the signature Cameron effect to them.