Man of Steel had a 2 hour 23 minute run time. Depending on the possibility of a multitude of hero/villains that will need introduced I am thinking a longer run time is necessary. Prediction: 2:40 My suggested run time (as fanboy): 3 HOURS! wOOt I think without the lead up of films that Marvel has had for example, a successful setup film can still be made to bring Justice League forward in a manner than doesn't feel rushed. Thoughts?