Horror films tend to be shorter. It doesn't matter if it's a commercial release supported by some major studio or some independent filmmaker's obscure arthouse film project. They just happen to be short. Who knows why. Sure, recently almost every kind of film gets to be shorter for financial reasons and to not bore general audience (and seriously these days, they can get bored by almost everything) but through the years some directors decided to go with much longer running times.
Just this year "Apostle" was pretty long and Luca Guadagnino's re-imagining of Dario Argento's "Suspiria" is not only longer than the original, but it's 152 minutes in total. Maybe we'll get more of such films soon, we will wait and see but for now, let's take a look ten of such horror films that are way longer than usual but at the same time, worth every minute.